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

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

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 exploi...

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Bibliographische Detailangaben
Hauptverfasser: Yamindi, J-B, Hong Ji, Wu Mu-qing
Format: Tagungsbericht
Sprache:eng
Schlagworte:
channel
Channel estimation
codebook
Downlink
Educational institutions
feedback
frequency selectivity
Indexes
MIMO
quantization
Telecommunications
Vectors
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Beschreibung
Zusammenfassung: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.
DOI:10.1109/APCAP.2012.6333129