On the Asymptotic Optimality of Fixed Rate Scheduling in Fading Multiuser Wideband OFDM Networks

Xiangyu GAO  Yuesheng ZHU  

IEICE TRANSACTIONS on Communications   Vol.E96-B   No.2   pp.632-634
Publication Date: 2013/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E96.B.632
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories for Communications
fixed rate scheduling (FRS),  minimum transmit sum power (MTSP),  orthogonal frequency division multiplexing (OFDM),  

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In this letter, we prove that for fading multiuser orthogonal frequency division multiplexing networks, a simple fixed rate scheduling scheme with only 1 bit channel state information feedback is capable of achieving the optimal performance in the wideband limit. This result indicates that the complexities of both the feedback and channel coding schemes can be reduced with nearly no system performance penalty in wideband wireless communication environments.