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R bits user selection switch feedback for zero forcing MU-MIMO based on low rate codebook
2012
EURASIP Journal on Wireless Communications and Networking
Channel feedback for multi-user (MU)-multiple-input multiple-output (MIMO) has been widely studied and some results have been got with random vector quantization scheme. However, while the low rate fixed codebook feedbacks are adopted, the performance of zero forcing (ZF) MU-MIMO will decrease as the unpredictable interuser interference is introduced because of quantized channel state information (CSI). To decrease inter-user interference in low rate fixed codebook feedback, an enhanced user
doi:10.1186/1687-1499-2012-7
fatcat:d5dolbhmizhqxjtz7me34qhfqa