A SINR Threshold-based Limited Feedback and Feedback Load Analysis for Downlink Multiuser Diversity

被引：1

作者：

Pan, Peisheng ^{[1
]}

Zheng, Baoyu ^{[1
]}

Song, Rongfang ^{[1
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Sch Commun & Informat Engn, Nanjing 210003, Peoples R China

来源：

2009 FIFTH INTERNATIONAL CONFERENCE ON MOBILE AD-HOC AND SENSOR NETWORKS | 2009年

关键词：

feedback; zero-forcing beamforming; channel state information; multiuser diversity; wireless cellular systems; MIMO BROADCAST CHANNELS;

D O I：

10.1109/MSN.2009.60

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

We propose a feedback strategy based on SINR threshold for downlink multiuser wireless systems. By using the proposed strategy the base station receives feedback only from those users whose SINRs are above a threshold which is elaborately chosen and broadcast to all users in the cell by the base station. So not all users need send their channel direction information (CDI) and channel quality information (CQI) to the base station. It is proved that downlink wireless systems using the proposed strategy can achieve the multiplexing diversity and multiuser diversity gain with greatly reduced the sum feedback rate.

引用

页码：144 / 147

页数：4

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