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  • 5G radio network architecture: white paper

     Wunder, Gerhard; Bucaille, Isabelle; Cardona, Narcís; Mancuso, Vincenzo; Dräxler, Martin; De La Oliva, Antonio; Ratnarajah, Tharm; Dittmann, Lars; Rost, Peter; Banchs, Albert; Wiart, Joe; Osseiran, Afif; Tullberg, Hugo; Lázaro, Óscar; Lavaux, Damien; Ejder Bastug, Ejder; Debbah, Mérouane; Willcock, Colin; Jungnickel, Volker; Lobillo Vilela, Felicia; Pascual Iserte, Antonio; Agustin de Dios, Adrian; Muñoz Medina, Olga; Goldhamer, Mariana; Vidal Manzano, Jose; Chávez, David; Simó Reigadas, Javier
    Date: 2014-02
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    This white paper is an outcome of the Radio Access and Spectrum cluster projects funded by the European Commission under the Seventh Framework Programme in the area of Future Networks. It presents a view from the European research community on the architecture aspects of 5G mobile and wireless communication systems.

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    TROPIC-D22 Design of network architecture for femto-cloud computing  Open access

     Lobillo Vilela, Felicia; Juan Ferrer, Ana; Puente, Miguel Angel; Becvar, Zdenek; Rohlik, Matej; Vanek, Tomas; Mach, Pavel; Muñoz Medina, Olga; Vidal Manzano, Jose; Hariyanto, Hadi; X. Ari Wibowo, Franciscus; Goldhammer, Mariana; de Marinis, Enrico; Gambetti, Fabrizio; Lo Presti, D.
    Date: 2013-03-29
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    This deliverable intends to provide an analysis of the network architecture required for small-cell-cloud computing. The architectural framework considered in this document refers to LTE small cell architecture options outlined in the 3GPP standard.The individual elements for radio, cloud and backhaul are described and various possibilities are considered and compared in order to bring them all together for the operation of a small cell cluster to take place in an LTE environment, taking into account the differences between residential and corporate environments. The inter-cluster scenario, for greater computing capabilities, is also analysed. Finally, several solutions are provided for different problems encountered during the analysis, such as Over the Air Communication and distributed cluster management, among others. This document can be used as a recommendation for operators adopting the small-cell-cloud paradigm. The architectural choices are recommendations that telecom operators may study and evaluate according to their requirements and preferences

    This deliverable intends to provide an analysis of the network architecture required for small-cell-cloud computing. The architectural framework considered in this document refers to LTE small cell architecture options outlined in the 3GPP standard.The individual elements for radio, cloud and backhaul are described and various possibilities are considered and compared in order to bring them all together for the operation of a small cell cluster to take place in an LTE environment, taking into account the differences between residential and corporate environments. The inter-cluster scenario, for greater computing capabilities, is also analysed. Finally, several solutions are provided for different problems encountered during the analysis, such as Over the Air Communication and distributed cluster management, among others. This document can be used as a recommendation for operators adopting the small-cell-cloud paradigm. The architectural choices are recommendations that telecom operators may study and evaluate according to their requirements and preferences

  • TROPIC-D311 Building blocks for MP2MP energy-constrained communication system

     Agustin de Dios, Adrian; Muñoz Medina, Olga; Pascual Iserte, Antonio; Vidal Manzano, Jose; Barbarossa, Sergio; Sardellitti, Stefania; di Lorenzo, Paolo; Baiocchi, Andrea; Sarkiss, Mireille; Kamoun, Mohamed; Vivier, Guillaume
    Date: 2013-09-20
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    Energy consumption at the mobile handset is becoming one of the most important aspects to be addressed in the current and future mobile communications systems, because of more sophisticated and computing-demanding applications are envisioned to run at the terminal. The present document investigates the actual power/energy consumption at the handset and proposes an online power consumption model and an offline power consumption model. Moreover, this deliverable also looks into efficient energy communication strategies elucidating the existing energy-latency tradeoff, i.e. the energy spent in the communications and the time needed for such communication. An additional strategy for saving energy in this work is by means of computation offloading, consisting in migrating the computationally demanding applications that are running in the handset to more powerful servers

  • Deliverable D41 (project TUCAN3G). UMTS/HSPA network dimensioning

     Vidal Manzano, Jose; Del Olmo Alos, Jaume; Agustin de Dios, Adrian; Pascual Iserte, Antonio; Muñoz Medina, Olga; Tupayachi Calderón, Omar; Sánchez, Miguel Ángel; García, Carlos; Uenten, Antonio
    Date: 2013-11
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    Based on the definition of the access network architecture and the voice and data traffic evolution forecast, this document derives engineering rules for dimensioning the number of open-access femtos, as a function of the frequency bands adopted for access, as well as the solar cells units. Dimensioning is based on service provision and energy consumption evaluation. Three femtocells-based deployment cases have been studied: first, a single HNB with different antennas types; second, two co-located HNB operating at different frequencies with directional antennas and third, the case of two co-located HNB operating at different frequencies and covering the same area. The considered deployment sites are the five specified in document D21 in the Napo river and Paranapura river. The required backhaul bandwidth is determined for all cases.

  • TROPIC-D321: Cooperative and distributed interference estimation-detection

     Barbarossa, Sergio; Sardellitti, Stefania; di Lorenzo, Paolo; Baiocchi, Andrea; Sarkiss, Mireille; Kamoun, Mohamed; Goldhammer, Mariana; Lagen Morancho, Sandra; Agustin de Dios, Adrian; Vidal Manzano, Jose
    Date: 2013-10-01
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    This deliverable documents part of the research developed in the task 3A2 concerning the development of cooperative and distributed interference estimation and detection strategies in femtocell networks. The proposed methods are of great interest in heterogeneous networks as a way to endow the network with self-organization capabilities in terms of radio resource allocation. First radio network architecture and protocols for OTA communications are defined and radio resource management strategies are proposed based on dynamic control and online learning of the radio environment. Then, several novel collaborative interference detection and estimation strategies are developed exploiting cooperative sensing among nearby nodes. Finally, the main features of collaborative distributed scheduling are investigated by discussing the fundamental principles of collaborative channel state information assessment.

  • D2.1 Report on Location Algorithm WP2

     Gimenez Febrer, Pere Joan; Pages Zamora, Alba Maria; Silva Pereira, Silvana; Demirkol, Ilker Seyfettin; Vidal Manzano, Jose; Paradells Aspas, Jose
    Date: 2013-07-12
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  • D2.2 Report on Data Fusion Algorithms WP2

     Silva Pereira, Silvana; Pages Zamora, Alba Maria; Gimenez Febrer, Pere Joan; Vidal Manzano, Jose
    Date: 2013-11-08
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    Deliverable D22 (project TUCAN3G). Operational technical handbook  Open access

     Prieto Egido, Ignacio; Martínez Fernández, Andrés; Sotelo López, Carlos; Agustin de Dios, Adrian; Vidal Manzano, Jose; Simó Reigadas, Javier; Paco Fernández, Juan; Rendón, Álvaro
    Date: 2013-05
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    This document shows a detailed plan for the work required to accomplish the objectives of TUCAN3G. All partners have contributed to this document by defining tasks and subtask, in coordination with the technical coordinator and the leader of each work package. Mechanisms for technical supervision are described, and the organizational chart presented.

    This document shows a detailed plan for the work required to accomplish the objectives of TUCAN3G. All partners have contributed to this document by defining tasks and subtask, in coordination with the technical coordinator and the leader of each work package. Mechanisms for technical supervision are described, and the organizational chart presented.

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    Deliverable D21 (project TUCAN3G). Socio-economic scenarios, technical specifications and architecture for the proof of concept  Open access

     García Rey, Ana; Prieto Egido, Ignacio; Sánchez, Ernesto; Muñoz Medina, Olga; Vidal Manzano, Jose; Agustin de Dios, Adrian; Pascual Iserte, Antonio; Simó Reigadas, Javier; Paco Fernández, Juan; Castillo Molina, Yury Yohana; Ramírez, Gustavo; Tupayachi Calderón, Omar
    Date: 2013-05
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    TUCAN3G aims to develop solutions to provide 3G services in isolated rural areas of developing countries. In order to do so, this document starts by analysing the reference scenarios where TUCAN3G solutions could be applied, explaining its general situation worldwide, the Latin America case, and its specific reality in Colombia and Peru, from the socioeconomic point of view. The technologies that TUCAN3G will integrate for this purpose are also described, providing an insight of the requirements that should be provided and the methodologies that will be used for both, the access and the transport network. Based on the former analysis, a design for the demonstration platform is performed, including a proposal for target localities, a general description of test to be carried out, and the needs of existing networks.

    TUCAN3G aims to develop solutions to provide 3G services in isolated rural areas of developing countries. In order to do so, this document starts by analysing the reference scenarios where TUCAN3G solutions could be applied, explaining its general situation worldwide, the Latin America case, and its specific reality in Colombia and Peru, from the socioeconomic point of view. The technologies that TUCAN3G will integrate for this purpose are also described, providing an insight of the requirements that should be provided and the methodologies that will be used for both, the access and the transport network. Based on the former analysis, a design for the demonstration platform is performed, including a proposal for target localities, a general description of test to be carried out, and the needs of existing networks.

  • TUCAN3G-M42: Procedures for UMTS/HSPA network optimization and control

     Agustin de Dios, Adrian; Pascual Iserte, Antonio; Vidal Manzano, Jose; Del Olmo Alos, Jaume; Rubio Lopez, Javier; Marques, Antonio G.; Kilgour, Kit
    Date: 2013-12
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  • Deliverable M712 (project TUCAN3G). Dissemination and standardisation plan

     Rendón, Álvaro; Vidal Manzano, Jose; Muñoz Medina, Olga; Martínez Fernández, Andrés; Albaz, Özge; Paco Fernández, Juan; Sánchez, Ernesto; Kilgour, Kit; Carbajal, Emerson; Prieto Egido, Ignacio; Gómez, Mari Carmen; Pemberthy, Luz Stella; Fouskas, Konstatinos
    Date: 2013-09
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    TROPIC-D21 Scenario and Requirements  Open access

     Becvar, Zdenek; Vondra, Michal; Dolezal, Jakub; Mach, Pavel; Rohlik, Matej; Agustin de Dios, Adrian; Lagen Morancho, Sandra; Muñoz Medina, Olga; Pascual Iserte, Antonio; Torrellas Socastro, Marc; Vidal Manzano, Jose; Lobillo Vilela, Felicia; Juan, Ana; Puente, Miguel Angel; Simamora, Lamhot; Anugrahani, Melani; Kelana, Eka; Hariyanto, Hari; X. Ari Wibowo, Franciscus; Ludfy, Ahmad; Budiono, Karno; Nainggolan, Lesmin; Chandra, Lunel; Goldhammer, Mariana; de Marinis, Enrico; Gambetti, Fabrizio; Lo Presti, D.; Mei, Alessandro; Stefa, Julinda; Vivier, Guillaume; Sezginer, Serdar; Sarkiss, Mireille; Barbarossa, Sergio; di Lorenzo, Paolo; Sardellitti, Stefania; Baiocchi, Andrea
    Date: 2013-07-22
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    This deliverable defines general framework for consequent technical workpackages in TROPIC. First, scenarios from the business point of view are defined and further transformed to more technical representation. Then, abstraction models are introduced for both communication and computation parts of femto-cloud concept. Furthermore, requirements need to be met to ensure efficient and feasible utilization of the femto-cloud are presented. To enable prove of the femto-cloud concept and to compare the developed techniques and algorithms a set of performance indicators to be considered in all technical workpackages are listed and defined. To that end, the models and simulation settings are defied in the last section of the document

    This deliverable defines general framework for consequent technical workpackages in TROPIC. First, scenarios from the business point of view are defined and further transformed to more technical representation. Then, abstraction models are introduced for both communication and computation parts of femto-cloud concept. Furthermore, requirements need to be met to ensure efficient and feasible utilization of the femto-cloud are presented. To enable prove of the femto-cloud concept and to compare the developed techniques and algorithms a set of performance indicators to be considered in all technical workpackages are listed and defined. To that end, the models and simulation settings are defied in the last section of the document

  • Wireless technologies for isolated rural communities in developing countries based on cellular femtocell deployment

     Muñoz Medina, Olga; Vidal Manzano, Jose; Pascual Iserte, Antonio; Agustin de Dios, Adrian; Fernandez Rubio, Juan-antonio
    Participation in a competitive project

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  • PORTABLE KIT FOR DETECTING TRAPPED AND BURIED PEOPLE

     Vidal Manzano, Jose; Silva Pereira, Silvana; Pages Zamora, Alba Maria
    Participation in a competitive project

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  • Network-MIMO for downlink in-band relay transmissions

     Lagen Morancho, Sandra; Agustin de Dios, Adrian; Vidal Manzano, Jose
    Eurasip journal on wireless communication and networking
    Date of publication: 2013-01-23
    Journal article

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    With the objective of improving the spectral efficiency and coverage homogeneity of wireless cellular systems in the downlink, we investigate how to take advantage of two promising transmission technologies envisioned in current standards: network-MIMO and relay stations (RSs). It is assumed that half-duplex RSs are deployed in a cellular system, where the duration of the relay-receive and the relay-transmit phases is fixed beforehand for all cells. In order to reduce the spectral efficiency loses associated to half-duplex relaying, we propose the use of base station (BS) cooperation under a network-MIMO precoding strategy based on block-diagonalization zero-forcing, and optimize radio resources under the convex performance criteria constrained by the per-BS power, modulation and coding schemes and the transmission rate in the relay-transmit phase. By applying convex optimization techniques, the optimal precoding strategy is derived and a suboptimal low complexity solution is also proposed. The obtained solutions are evaluated at system level and compared to other cooperative and non-cooperative BS-based schemes.

  • Coordinated beamforming access for interfering half-duplex relay networks

     Torrellas Socastro, Marc; Agustin de Dios, Adrian; Vidal Manzano, Jose
    IEEE International Conference on Communications
    Presentation's date: 2013-06-09
    Presentation of work at congresses

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    This work deals with a relay-assisted cellular network, where the downlink communication is carried out in two orthogonal phases. In the first-hop transmission, multiple evolved Node Bs (eNB) transmit in a coordinated way to multiple half-duplex Relay Nodes (RNs). In the second-hop transmission, each RN assists a single User Equipment (UE) without precise channel knowledge. In the first hop, we consider two multiple- intput multiple-output (MIMO) access schemes: Interference Alignment (IA) and block diagonalization zero-forcing (ZF-BD) precoders for which power and transmission time to RNs are optimally allocated. Cell capacity and outage rates are evaluated and benchmarked to the case where network-MIMO (N-MIMO) coordinated transmission in used in the first hop

  • Degrees of freedom of the rank-deficient MIMO X channel

     Agustin de Dios, Adrian; Vidal Manzano, Jose
    IEEE Information Theory Workshop
    Presentation's date: 2013-09-12
    Presentation of work at congresses

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    The multiple-input multiple-output (MIMO) X channel with rank-deficient channels is considered. We characterize the total degrees of freedom (DoF) by defining an outer bound which is attained by the proposed precoding scheme. The total DoF are described in closed-form when all transmitters and receivers have M and N antennas, respectively. For an arbitrary number of antennas, the total DoF are obtained as solution of a linear programming problem. Results elucidate that, unlike point-to-point MIMO systems where DoF increase with the rank of the channel, the total DoF in a multipoint-to-multipoint MIMO system can increase up to a certain point if channels are rankdeficient. Hence, we corroborate the relevance of knowing the rank-deficiency in the MIMO X channel, a property already observed in the MIMO Interference channel.

    The multiple-input multiple-output (MIMO) X channel with rank-deficient channels is considered. We characterize the total degrees of freedom (DoF) by defining an outer bound which is attained by the proposed precoding scheme. The total DoF are described in closed-form when all transmitters and receivers have M and N antennas, respectively. For an arbitrary number of antennas, the total DoF are obtained as solution of a linear programming problem. Results elucidate that, unlike point-to-point MIMO systems where DoF increase with the rank of the channel, the total DoF in a ultipoint-to-multipoint MIMO system can increase up to a certain point if channels are ankdeficient. Hence, we corroborate the relevance of knowing the rank-deficiency in the MIMO X channel, a property already observed in the MIMO Interference channel.

  • Joint allocation of radio and computational resources in wireless application offloading

     Muñoz Medina, Olga; Pascual Iserte, Antonio; Vidal Manzano, Jose
    Future Network and MobileSummit
    Presentation's date: 2013-07
    Presentation of work at congresses

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    Providing femto-access points (FAPs) with computational capabilities will allow (either totally or partially) offloading of highly demanding applications from smart-phones to the so called femto-cloud. Such offloading promises to be beneficial in terms of battery saving at the mobile terminal (MT) and/or latency reduction in executing applications, if the energy and/or time required for the communication process are compensated by the energy and/or time savings that result from remote computation. For this scenario, we provide a general framework that allows the joint allocation of radio and computational resources resulting in an optimized trade-off between energy consumption and latency. Such energy ansumption includes contributions from both communication and computation segments. Complex communication models (e.g. multi-input multi-output (MIMO) transmission) can be encompassed within the proposed framework. Moreover, practical constraints can be included, such as energy constraints, application constraints, as well as radio and computational constraints. As a result of the optimization, the optimal communication strategy (transmission power, rate, etc.) between the handset and the serving FAP is obtained, as well as the optimal distribution of computation tasks between the handset and the FAPs in the femto-cloud. A particular case is defined: when all the computation tasks are forced to be done in either the handset or the femto-cloud. In such a case, the proposed framework will provide the necessary information to decide whether offloading the application is beneficial

    Providing femto-access points (FAPs) with computational capabilities will allow (either totally or partially) offloading of highly demanding applications from smart-phones to the so called femto-cloud. Such offloading promises to be beneficial in terms of battery saving at the mobile terminal (MT) and/or latency reduction in executing applications, if the energy and/or time required for the communication process are compensated by the energy and/or time savings that result from remote computation. For this scenario, we provide a general framework that allows the joint allocation of radio and computational resources resulting in an optimized trade-off between energy consumption and latency. Such energy ansumption includes contributions from both communication and computation segments. Complex communication models (e.g. multi-input multi-output (MIMO) transmission) can be encompassed within the proposed framework. Moreover, practical constraints can be included, such as energy constraints, application constraints, as well as radio and computational constraints. As a result of the optimization, the optimal communication strategy (transmission power, rate, etc.) between the handset and the serving FAP is obtained, as well as the optimal distribution of computation tasks between the handset and the FAPs in the femto-cloud. A particular case is defined: when all the computation tasks are forced to be done in either the handset or the femto-cloud. In such a case, the proposed framework will provide the necessary information to decide whether offloading the application is beneficial

  • Distributed inter-cluster interference management for CoMP-based cellular networks

     Lagen Morancho, Sandra; Agustin de Dios, Adrian; Vidal Manzano, Jose
    IEEE Global Communications Conference
    Presentation's date: 2013-12-12
    Presentation of work at congresses

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    This paper proposes distributed inter-cluster interference management procedures for 1 Coordinated Multi-Point (CoMP) Time Division Duplexing (TDD) cellular networks, in which a set of base stations (BSs), that form a cluster, cooperate in the downlink (DL) and uplink (UL) transmissions to communicate with a group of users while causing interference to users in neighbor clusters. In order to reduce the complications associated to the estimation of the interfering channels, we describe new iterative procedures based on channel reciprocity that avoid such estimation by exploiting the received signal in the UL, provided that transmit and receive filters in DL and UL are properly designed. Simulations show that proposed techniques attain significant DL and UL spectral efficiency gains. Furthermore, an analysis of imperfect channel state information (CSI) at both ends is included, evidencing the robustness of the proposed procedures. Considerations on convergence are included.

    This paper proposes distributed inter-cluster interference management procedures for 1 Coordinated Multi-Point (CoMP) Time Division Duplexing (TDD) cellular networks, in which a set of base stations (BSs), that form a cluster, cooperate in the downlink (DL) and uplink (UL) transmissions to communicate with a group of users while causing interference to users in neighbor clusters. In order to reduce the complications associated to the estimation of the interfering channels, we describe new iterative procedures based on channel reciprocity that avoid such estimation by exploiting the received signal in the UL, provided that transmit and receive filters in DL and UL are properly designed. Simulations show that proposed techniques attain significant DL and UL spectral efficiency gains. Furthermore, an analysis of imperfect channel state information (CSI) at both ends is included, evidencing the robustness of the proposed procedures. Considerations on convergence are included.Os

  • Method and systems for decentralized interference management in a wireless communication system

     Vidal Manzano, Jose; Lagen Morancho, Sandra; Agustin de Dios, Adrian
    Date of request: 2013-08-06
    Invention patent

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  • Downlink coordinated radio resource management in cellular networks with partial CSI

     Calvo Page, Eduard; Muñoz Medina, Olga; Vidal Manzano, Jose; Agustin de Dios, Adrian
    IEEE transactions on signal processing
    Date of publication: 2012-03
    Journal article

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    We explore decentralized coordination of sectored cellular networks to adapt the usage of downlink resources to the instantaneous network conditions. The transmission frame consists of an orthogonal bandwidth usage phase, where sectors perform FDMA and power control over an agreed frequency chunk, and a shared bandwidth usage phase where each sector performs FDMA over the full available bandwidth without power control (interference is not controlled in this phase by any means). Decentralized network utility maximization with global optimality guarantee is enabled by fixing this structure of the transmission frame, which does not cause significant network-wide losses. Thus, the ability to better balance the resources gained from coordination generates some slack that can be used to either i) provide higher-quality access, ii) increase the number of active users, or iii) reduce deployment and maintenance costs by operating larger cells.

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    FREEDOM D4.2 Design and evaluation of effective procedures for MAC layer  Open access

     Mach, Pavel; Becvar, Zdenek; Bestak, Robert; Neruda, M.; Roux, Pierre; Hariyanto, Hari; X. Ari Wibowo, Franciscus; Agustin de Dios, Adrian; Muñoz Medina, Olga; Vidal Manzano, Jose; A. Carfagna, Alessandro
    Date: 2012-01-16
    Report

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    The implementation of femtocells introduces many technical challenges that must be solved in order to fully exploit their potentials. This deliverable primarily focuses on control procedures for radio resource management addressing the most critical issues.

    The implementation of femtocells introduces many technical challenges that must be solved in order to fully exploit their potentials. This deliverable primarily focuses on control procedures for radio resource management addressing the most critical issues.

    The implementation of femtocells introduces many technical challenges that must be solved in order to fully exploit their potentials. This deliverable primarily focuses on control procedures for radio resource management addressing the most critical issues. issues.

  • TROPIC-D11 Project Handbook

     Vidal Manzano, Jose
    Date: 2012-09-28
    Report

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    This document describes the quality plan to be used by partners of the TROPIC consortium during the execution of the project. The organisation and operating methods of the project are described

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    Project Final Report ¿ FREEDOM ICT-248891  Open access

     Muñoz Medina, Olga; Vidal Manzano, Jose; Agustin de Dios, Adrian; de Marinis, Enrico; Janneteau, Christophe; Barbarossa, Sergio; Becvar, Zdenek; Vivier, Guillaume; Lostanlen, Yves; K. Sundara, Rahadian; Hariyanto, Hadi
    Date: 2012-03-13
    Report

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    This document is the final publishable summary report of the objective and work carried out within the European Project FREEDOM, ICT-248891.

    This document is the final publishable summary report of the objective and work carried out within the European Project FREEDOM, ICT-248891.

    This document is the final publishable summary report of the objective and work carried out within the European Project FREEDOM, ICT-248891.

  • FREEDOM D2.3.1 - Technology implementation plans

     Vidal Manzano, Jose; Barbarossa, S.; Imponente, G.; Roux, P.; Becvar, Z.; Vivier, G.; Corre, Y.; Hariyanto, H.
    Date: 2012-01
    Report

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    This report captures the technology implementation plan from partners involved in FREEDOM. It summarizes how the technology developed in the framework of FREEDOM will impact the current or future business of the partners.

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    FREEDOM - D42 Design and evaluation of effective procedures for MAC layer  Open access

     Mach, P.; Becvar, Z.; Bestak, R.; Neruda, M.; Roux, P.; Hariyanto, H.; Ari Wibowo, F.X.; Agustin de Dios, Adrian; Muñoz Medina, Olga; Vidal Manzano, Jose; Carfagna, A.
    Date: 2012-01
    Report

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    The implementation of femtocells introduces many technical challenges that must be solved in order to fully exploit their potentials. This deliverable primarily focuses on control procedures for radio resource management addressing the most critical issues. To utilize radio resources of femtocell efficiently, a novel routing of data among user s served by the same femtocell is proposed. Furthermore, spectrum-efficient technique for power control, scheduling (both at radio side and backhaul side and multicast/broadcast services transmissions are designed. Additionally, novel authorization approaches and femtocells’ identification technique are proposed while taking in consideration the scalability of the system. This document designs and specifies the control plane procedures to ensure effective coordination among femtocells and macrocell designed in WP3. Finally, cross-layer optimization issues are addressed here by means of optimal femtocells’ power allocation derivation using the Game Theory framework.

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    FREEDOM D3.3 - Cooperative schemes in the femto-based networks  Open access

     Agustin de Dios, Adrian; Vidal Manzano, Jose; Pescosolido, L.; Barbarossa, S.; Kammoun, M.; Sarkiss, M.
    Date: 2012-01
    Report

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    We investigate cooperative transmission schemes that can be applied to joint deployments of femto-access points (FAPs) and macro base stations (MBS) by exploiting backhaul communication links between nodes at the data-plane level. First, we study the effects of some hardware impairments, such as time misalignment and carrier offset compensation, on cooperation performance. Additionally, we look into the MIMO X channel as a general framework that subsumes all possible types of cooperative communication between two sources and two destinations (broadcast, interference or multiple access channels), assuming full channel state information at the transmitters. Since FAPs have a delay constrained backhaul the cooperation of multiple FAPs becomes sensitive to random delays at the sources. In this regard we have provided two solutions: a) appropriate delay-tolerant cooperative space-time coding and decoding schemes and b) specific cooperative schemes for critical delay applications.

  • Distributed computing, storage and radio resource allocation over cooperative femtocells

     Muñoz Medina, Olga; Agustin de Dios, Adrian; Pascual Iserte, Antonio; Vidal Manzano, Jose; Lagen Morancho, Sandra; Torrellas Socastro, Marc
    Participation in a competitive project

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  • FP7-318784-TROPIC - E-01172

     Vidal Manzano, Jose; Pascual Iserte, Antonio; Agustin de Dios, Adrian; Muñoz Medina, Olga
    Participation in a competitive project

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  • MCS and sub-band selection for downlink interference coordination in LTE-A Femtocells

     Muñoz Medina, Olga; Agustin de Dios, Adrian; Vidal Manzano, Jose
    IEEE Vehicular Technology Conference
    Presentation's date: 2012-09
    Presentation of work at congresses

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    This paper proposes a decentralized algorithm for interference coordination in LTE-A networks, based on the exchange of information (pricing) at control plane level. In our approach, every user equipment (UE) report the maximum modulation and coding scheme (MCS) that can be used within several sets (sub-bands) of available resource blocks, along with a parameter (cost) that measures the MCS degradation due to the transmission from an interfering neighbor. Through the exchange of pricing messages, the higher costs are distributed to the dominant interferers; and the selection of the MCS and operational sub-band is based on the current link conditions along with the received pricing messages. We evaluate the algorithm in a cellular area covered by a macro base station (MBS) and multiple active femtocells. We also measure the degradation due to the quantization of the exchanged cost values. The results demonstrate significantly enhanced performance as compared to the non-coordinated case.

  • Technoeconomic evaluation of cooperative relaying transmission techniques in OFDM cellular networks

     Moral, Antolín; Vidal Manzano, Jose; Pérez, Jorge; Agustin de Dios, Adrian; Marina, Ninoslav; Host-Madsen, Anders
    Eurasip journal on advances in signal processing
    Date of publication: 2011-02-27
    Journal article

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    We evaluate the costs in the deployment of a 4G relay-assisted network in the 2.6GHz band following a technoeconomic methodology that departs fromcell dimensioning based on spectral efficiency and outage capacity requirements. Different decodeand- forward relaying protocols are considered in the analysis, assuming a certain traffic load evolution over a period of ten years, different geotypes, and a progressive deployment of base stations and relay stations. Results show significant benefits for operators as well as reduction in the total radiated power.

  • Relay-assisted wireless networks

     Agustin de Dios, Adrian; Vidal Manzano, Jose; Muñoz Medina, Olga; Glisic, S
    Date of publication: 2011
    Book chapter

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    FREEDOM D3.2 Interference Coordination Protocols in Femto-based Networks  Open access

     Agustin de Dios, Adrian; Muñoz Medina, Olga; Vidal Manzano, Jose; Goldhammer, Mariana; Rodriguez Fonollosa, Javier; Pastore, Adriano; Sardellitti, Stefania; Pescosolido, Loreto; di Lorenzo, Paolo; Barbarossa, Sergio; Baiocchi, Andrea; de Marinis, Enrico; Imponente, Giovanni; Pucci, Fabrizio; Rosi, Guido
    Date: 2011-11-28
    Report

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    This document looks into coordinated radio resource allocation algorithms in deployments of huge number of femto-access points (FAP) by exploiting the message exchange at control-plane level through the wired ISP backhaul link. The algorithms present in this document are based on decentralized cooperative strategies supported by Game Theory. Decentralized resource allocation algorithms based on price exchange have been derived under different criteria: guaranteeing a minimum rate with the minimum power, maximizing the weighted sum-rate of the system, maximizing the opportunistic throughput when there are different source of randomness like random link failures and noise quantization or when the activity of macro-users is not known by FAPs (coordinated channel sensing or modelling the activity). Additionally, a genetic-based resource allocation is investigated, providing centralized and decentralized algorithms, to which the Game Theory solutions are challenged . In all cases, the techniques derived require modifications of the current LTE-A standard which are identified. Finally, some of those algorithms have been evaluated in a realistic corporate scenario elucidating the advantages of coordinated resource allocation techniques proposed.

    This document looks into coordinated radio resource allocation algorithms in deployments of huge number of femto-access points (FAP) by exploiting the message exchange at control-plane level through the wired ISP backhaul link. The algorithms present in this document are based on decentralized cooperative strategies supported by Game Theory. Decentralized resource allocation algorithms based on price exchange have been derived under different criteria: guaranteeing a minimum rate with the minimum power, maximizing the weighted sum-rate of the system, maximizing the opportunistic throughput when there are different source of randomness like random link failures and noise quantization or when the activity of macro-users is not known by FAPs (coordinated channel sensing or modelling the activity). Additionally, a genetic-based resource allocation is investigated, providing centralized and decentralized algorithms, to which the Game Theory solutions are challenged . In all cases, the techniques derived require modifications of the current LTE-A standard which are identified. Finally, some of those algorithms have been evaluated in a realistic corporate scenario elucidating the advantages of coordinated resource allocation techniques proposed.

    This document looks into coordinated radio resource allocation algorithms in deployments of huge number of femto-access points (FAP) by exploiting the message exchange at control-plane level through the wired ISP backhaul link.

  • Access to the full text
    FREEDOM Project. Interference coordination protocols in femto-based networks  Open access

     Agustin de Dios, Adrian; Muñoz Medina, Olga; Vidal Manzano, Jose; Goldhamer, M.; Rodriguez Fonollosa, Javier; Pastore2, A.; Sardellitti, Stefania; Pescosolido, Loreto; di Lorenzo, Paolo; Barbarossa, Sergio; Baiocchi, Andrea; de Marinis, Enrico; Imponente, Giovanni; Pucci, Fabrizio; Rosi, Guido
    Date: 2011-11-28
    Report

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    This document looks into coordinated radio resource allocation algorithms in deployments of huge number of femto-access points (FAP) by exploiting the message exchange at control-plane level through the wired ISP backhaul link. The algorithms present in this document are based on decentralized cooperative strategies supported by Game Theory. Decentralized resource allocation algorithms based on price exchange have been derived under different criteria: guaranteeing a minimum rate with the minimum power, maximizing the weighted sum-rate of the system, maximizing the opportunistic throughput when there are different source of randomness like random link failures and noise quantization or when the activity of macro-users is not known by FAPs (coordinated channel sensing or modelling the activity). Additionally, a genetic-based resource allocation is investigated, providing centralized and decentralized algorithms, to which the Game Theory solutions are challenged. In all cases, the techniques derived require modifications of the current LTE-A standard which are identified. Finally, some of those algorithms have been evaluated in a Realistic corporate scenario elucidating the advantages of coordinated resource allocation techniques proposed.

    Postprint (author’s final draft)

  • Macrocelulas y Femtocelulas en Sistemas con Técnicas Avanzadas de Coordinación de la Interferencia y Cooperación

     Vidal Manzano, Jose; Rodriguez Fonollosa, Javier; Cabrera Bean, Margarita Asuncion; Fernandez Rubio, Juan-antonio; Pages Zamora, Alba Maria; Agustin de Dios, Adrian; Silva Pereira, Silvana; Garcia Ordoñez, Luis; Vila Valls, Jordi; Muñoz Medina, Olga
    Participation in a competitive project

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  • C/033194/10 Cooperación Institucional entre las universidades AAU y UPC y académica en el ámbito de las TIC

     Vidal Lopez, Eva Maria; Torres Urgell, Luis; Vidal Manzano, Jose; Serrat Fernandez, Juan; Aguilar Igartua, Mónica; Fernandez Muñoz, Marcel
    Participation in a competitive project

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  • FREEDOM-D5.1: Evaluation of the interference manage ment algorithms and femto-relays tradeoff analysis

     Arbolino, M.V.; Imponente, Gian Paolo; Rosi, G.; Agustin de Dios, Adrian; Lagen Morancho, Sandra; Vidal Manzano, Jose; Cabrera Bean, Margarita Asuncion
    Date: 2011-12-14
    Report

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    The purpose of this document is twofold: first evaluating the interference management algorithms developed in WP3 at system le vel, and second, studying the tradeoffs and complementarities in network deployments based either on relay stations or on femto access points.

  • Preemption and QoS management algorithms for coordinated and uncoordinated base stations

     Muñoz Medina, Olga; Pascual Iserte, Antonio; Baquero, Pau; Vidal Manzano, Jose
    IEEE International Workshop on Signal Processing Advances in Wireless Communications
    Presentation's date: 2011-06
    Presentation of work at congresses

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  • Improved interference alignment precoding for the MIMO X channel

     Agustin de Dios, Adrian; Vidal Manzano, Jose
    IEEE International Conference on Communications
    Presentation's date: 2011-06
    Presentation of work at congresses

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    We derive a linear transmit precoding scheme based on interference alignment at the transmitters and zero-forcing at the receivers, for the MIMO X channel based on the Generalized Singular Value Decomposition (GSVD) that is able to attain the outer bound on the degrees of freedom (DoF) region for any antenna configuration, except when all terminals have one antenna. Additionally, the proposed scheme is able to enhance the transmission rate in terms of high SNR offset.

  • Network MIMO for downlink in-band relay transmissions with relaying phases of fixed duration

     Agustin de Dios, Adrian; Vidal Manzano, Jose; Lagen, Sandra; Valera, Eduard
    European Signal Processing Conference
    Presentation's date: 2011-08
    Presentation of work at congresses

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    A half-duplex relay station (RS)-based cellular system deployment is considered, where multiple base stations (BS) cooperate in the BS-RS in-band transmission for the downlink. The duration of the relay-receive and the relay-transmit phases are fixed beforehand, so that the interference induced by other cells is stationary during a transmission interval. With the optimization of the precoders and powers allocated to the wireless backhaul (relay-receive phase)and to the RS-MS access (relay-transmit phase), it is possible to exploit the benefits of network-MIMO (N-MIMO) along with combating the pathloss and shadowing effects thanks to the RSs. Consequently, an appealing significant enhanced spectral efficiency, power efficiency and coverage homogeneity are obtained. Results are benchmarked to the case where the relay phases are optimized.

  • Network-MIMO backhauling for QOS-constrained relay transmission

     Vidal Manzano, Jose; Agustin de Dios, Adrian; Lagen, Sandra; Valera, Eduard; Muñoz Medina, Olga; García Armada, Ana; Sánchez Fernández, Matilde
    IEEE International Conference on Acoustics, Speech and Signal Processing
    Presentation's date: 2011-05
    Presentation of work at congresses

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    A relay station (RS)-based cellular system deployment is considered, where multiple base stations (BS) cooperate in the BS-RS in-band transmission for the downlink. With the joint optimization of the resources allocated to the wireless backhaul and to the RS-MS access, it is possible to exploit the benefits of networked-MIMO along with combating the pathloss and shadowing effects, and thus obtain significantly enhanced spectral efficiency and coverage homogeneity. The problem is shown to be convex under conventional QoS objective functions. Suboptimal low complexity solutions are also proposed and evaluated.

  • Interference pricing for self-organisation in OFDMA femtocell networks

     Agustin de Dios, Adrian; Vidal Manzano, Jose; Muñoz Medina, Olga
    Future Network and MobileSummit
    Presentation's date: 2011-06
    Presentation of work at congresses

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  • Decentralized weighted sum rate maximization in MIMO-OFDMA femtocell networks

     Agustin de Dios, Adrian; Vidal Manzano, Jose; Muñoz Medina, Olga; Rodriguez Fonollosa, Javier
    IEEE Global Communications Conference
    Presentation's date: 2011-12
    Presentation of work at congresses

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    We propose a decentralized strategy for downlink interference management in overlaid MIMO femtocell-macrocell deployments operating in the same band under OFDMA access. The resource allocation, consisting of MIMO precoders at the macro base station (MBS) and femto access points (FAPs) and possibly the resource block (RB) assignment, is designed to maximize the Weighted Sum Rate (WSR) of the system. Being the overall problem non-convex, we propose to solve it in a decentralized way where each transmitter designs its resource allocation using interference prices exchanged with other transmitters (FAPs and MBS) by exploiting the wired backhaul connection. The problem includes a rate restriction per FAP that accounts for the limited bitrate provided by the Internet Service Provider (ISP) wired backhaul. Two efficient algorithms are provided for: 1) optimizing MIMO precoders and 2) optimizing both MIMO precoders and RB assignment. Numerical results compare decentralized strategies based on pricing exchange and on pure competition in dense FAP deployments.

  • Weighted sum rate maximization for the MIMO X channel through MMSE precoding

     Agustin de Dios, Adrian; Vidal Manzano, Jose
    IEEE International Symposium on Information Theory
    Presentation's date: 2011-08
    Presentation of work at congresses

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  • Coordinated MIMO precoding for power minimization in femtocell systems

     Muñoz Medina, Olga; Vidal Manzano, Jose; Agustin de Dios, Adrian; Pascual Iserte, Antonio; Barbarossa, Sergio
    IEEE Global Communications Conference
    Presentation's date: 2011-12
    Presentation of work at congresses

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  • MÉTODO Y SISTEMA PARA LA GESTIÓN DESCENTRALIZADA DE FEMTOCÉLULAS VECINAS

     Rodriguez Fonollosa, Javier; Agustin de Dios, Adrian; Vidal Manzano, Jose; Muñoz Medina, Olga
    Date of request: 2011-11-28
    Invention patent

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    Método y sistema para la gestión descentralizada de femtocélulas vecinas.

    El método comprende:

    - la comunicación, a una primera femtocélula desde una segunda femtocélula, de la siguiente información:

    i) la restricción de requerimientos de interferencia de un usuario activo de la segunda femtocélula, y

    ii) uno o más parámetros que caracterizan un canal radio físico definido desde la primera femtocélula hasta dicho al menos un usuario activo de la segunda femtocélula;

    - la autoconfiguración de los parámetros de transmisión de la primera femtocélula usando la información comunicada i) y ii).

    El sistema está configurado para implementar el método de la invención.

  • Classification of linear and non-linear modulations using the Baum¿Welch algorithm and MCMC methods

     Puengnim, Anchalee; Thomas, N.; Tourneret, Jean-Yves; Vidal Manzano, Jose
    Signal processing
    Date of publication: 2010-12
    Journal article

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  • On the computation of the capacity region of the discrete MAC

     Calvo, Eduard; Pérez Palomar, Daniel; Rodriguez Fonollosa, Javier; Vidal Manzano, Jose
    IEEE transactions on communications
    Date of publication: 2010-12
    Journal article

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    Compress-and-forward cooperative mimo relaying with full channel state information  Open access

     Simoens, Sebastien; Muñoz Medina, Olga; Vidal Manzano, Jose; Del Coso, Aitor
    IEEE transactions on signal processing
    Date of publication: 2010-02
    Journal article

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    Postprint (author’s final draft)