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Efficient margin adaptive scheduling for MIMO-OFDMA systems

Autor
Moretti, M.; Perez, A.
Tipus d'activitat
Article en revista
Revista
IEEE transactions on wireless communications
Data de publicació
2013-01
Volum
12
Número
1
Pàgina inicial
278
Pàgina final
287
DOI
https://doi.org/10.1109/TWC.2012.120412.120355 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/18800 Obrir en finestra nova
Resum
In this paper we address the problem of margin adaptive scheduling in the downlink of an orthogonal frequency division multiple access (OFDMA) multiple-input multiple-output (MIMO) system. Optimal resource allocation in MIMO systems requires the joint optimization of: a) linear transmit and receive spatial filters, b) channel assignment and c) power allocation. This problem is not convex and its complexity becomes thus intractable already for small sets of users and subcarriers. To reduce the co...
Citació
Moretti, M.; Perez, A. Efficient margin adaptive scheduling for MIMO-OFDMA systems. "IEEE transactions on wireless communications", Gener 2013, vol. 12, núm. 1, p. 278-287.
Paraules clau
Allocation problems, Channel Assignment, Channel allocation, Channel quality, Frequency division multiple access, Heuristic strategy, Joint optimization, Linear programming formulation, MIMO systems, MIMO-OFDMA, Margin adaptive, Mobile telecommunication systems, Multi carrier systems, Multiple access interference, Multiple-input-multiple-output systems, Multiuser diversity, Numerical results, OFDMA, Optimal resource allocation, Optimization, Orthogonal frequency division multiple access, Performance loss, Power allocations, Resource allocation, Scheduling, Spatial dimension, Spatial filters, Sub-carriers
Grup de recerca
A&MP - Grup de Processament d'Arrays i Sistemes Multicanal

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