Design and analysis of multi-user SDMA systems with noisy limited CSIT feedback
Tianyu Wu, Vincent N. Lau · IEEE Transactions on Wireless Communications · 2010
In this paper, we consider spatial-division multipleaccess (SDMA) systems with one base station with multiple antennae and a number of single antenna mobiles under noisy limited CSIT feedback. We propose a robust noisy limited feedback design for SDMA systems. Furthermore, we show that despite the noisy feedback, the average system goodput scales as O(nT)(1-ϵ)nT-1(Cfb-log2(Nn)))and O(nT.log2P) in the interference limited regime (CfbnT- 1) log2P + log2Nn) and noise-limited regime respectively.