Design and analysis of multi-user SDMA systems with noisy limited CSIT feedback

Authors:
Tianyu Wu;Vincent K. N. Lau
Affiliations:
Dept of EEE, Hong Kong University of Science and Technology;Dept of EEE, Hong Kong University of Science and Technology
Venue:
IEEE Transactions on Wireless Communications
Year:
2010

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Abstract

In this paper, we consider spatial-division multiple-access (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 ċlog2 P) in the interference limited regime (Cfb nT - 1) log2 P + log2 Nn) and noise-limited regime respectively.