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Asymptotically optimum energy profile for successive interference cancellation in DS-CDMA under a power unbalance constraint

Autor
Sala, J.; Rey, F.; Villares, J.
Tipus d'activitat
Article en revista
Revista
IEEE communications letters
Data de publicació
2012-02
Volum
16
Número
2
Pàgina inicial
172
Pàgina final
175
DOI
https://doi.org/10.1109/LCOMM.2011.121311.111964 Obrir en finestra nova
Projecte finançador
2009SGR1236
CENIT 2010: THOFU
COMONSENS. Foundations and Methodologies for Future Communication and Sensor Networks
TEC2010- 21245- C02/TCM
Repositori
http://hdl.handle.net/2117/15654 Obrir en finestra nova
URL
http://www.ieeexplore.ieee.org Obrir en finestra nova
Resum
A new Ordinary Differential Equation (ODE) governing the SNIR evolution of a Successive Interference Canceller (SIC) for DS-CDMA is derived when the number of users tends to infinity and all users share the same channel encoder. Using Variational Calculus, this ODE is applied to obtaining the energy profile that maximizes the average spectral efficiency when a constraint on the power unbalance (maximum power to minimum power ratio) of received users is enforced. The conditions for extremality of...
Citació
Sala, J.; Rey, F.; Villares, Javier. Asymptotically optimum energy profile for successive interference cancellation in DS-CDMA under a power unbalance constraint. "IEEE communications letters", Febrer 2012, vol. 16, núm. 2, p. 172-175.
Paraules clau
Successive Interference Cancellation Power Unbalance Differential Equation Variational Calculus Packet Error Rate Cdma Error Propagation
Grup de recerca
SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions

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