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VIII IEEE Workshop on Signal Processing Advances in Wireless Communications, Helsinki : Finlande (2007)
OPTIMAL DECODING ORDER UNDER TARGET RATE CONSTRAINTS
Alberto Suarez, Merouane Debbah 1, Laura Cottatellucci, Eitan Altman 2
COOPCOM/Eurecom Collaboration(s)
(17/06/2007)

In this contribution, we derive the optimal power allocation under target rate constraints in the case of an uplink multiuser system. Using asymptotic results based on random matrix theory, we provide a unified framework for determining the optimal decoding order when using Successive Interference Cancellation (SIC) receivers, namely the MMSE (Minimum Mean Square Error) and Matched filter SIC. Moreover, for decentralized systems, we show that each user can, under certain conditions, solely determine the power allocation based only on his channel energy and the statistics of the other users. Simulations in the case of finite systems validate the asymptotic claims.
1 :  SUPELEC-Campus Gif
SUPELEC
2 :  MAESTRO (INRIA Sophia Antipolis)
INRIA – Université Montpellier II - Sciences et techniques
Sciences de l'ingénieur/Traitement du signal et de l'image

Mathématiques/Théorie de l'information et codage

Informatique/Théorie de l'information et codage

Informatique/Traitement du signal et de l'image
optimal decoding – MMSE-SIC – target constraints