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Analytical investigation on DL MU-MIMO performance with increased feedback bits

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3 Author(s)
Yamindi, J.-B. ; Sch. of Inf. & Telecommun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China ; Hong Ji ; Wu Mu-qing

This paper investigates downlink MU-MIMO for further improvement using an analytical method. The method shows that the potential benefit for MU-MIMO with increased feedback is strongly dependant to channel frequency selectivity. The introduced codebook with 8- and 12-bt PMI cases are shown to exploit the structure to significantly lower the complexity of PMI searches. Link level simulations confirm our findings.

Published in:

Antennas and Propagation (APCAP), 2012 IEEE Asia-Pacific Conference on

Date of Conference:

27-29 Aug. 2012