Mode Adaptive Opportunistic Transmission in MU-MIMO Downlink with Limited Feedback

doi:10.13190/jbupt.200905.15.lizh

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2009, Vol. 32 ›› Issue (5): 15-19.doi: 10.13190/jbupt.200905.15.lizh

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Mode Adaptive Opportunistic Transmission in MU-MIMO Downlink with Limited Feedback

LI Zhao,YANG Jia-wei,YAO Jun-liang,CHEN Ting

(State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China)

Received:2009-02-19 Revised:2009-08-01 Online:2009-10-28 Published:2009-10-28
Contact: Zhao LI

Abstract

Abstract:

A mode adaptive opportunistic transmission scheme in multiuser multi-input multioutput（MU-MIMO） downlink with limited feedback is introduced. In each time slot only eligible mobile station (MS) whose channel quality exce
eds a preset threshold would select transmission mode, including eamforming (BF) and spatial multiplexing (SM) and adaptively feed channel information. With feedback information, base station (BS) schedules one user out of candidate MS. Analysis is employed in evaluating the proposed scheme. Monte-Carlo simulation shows that the scheme can achieve high capacity as well as low outage probability with limited feedback cost.

Key words: multiuser, multi-input multi-output systems, adaptive, limited feedback, beamforming, spatial multiplexing

LI Zhao,YANG Jia-wei,YAO Jun-liang,CHEN Ting. Mode Adaptive Opportunistic Transmission in MU-MIMO Downlink with Limited Feedback[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2009, 32(5): 15-19.

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Mode Adaptive Opportunistic Transmission in MU-MIMO Downlink with Limited Feedback

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