Impact of Feedback and User Pairing Schemes on Receiver Performance in MU-MIMO LTE Systems

被引：0
|
作者：
Badic, B. [1 ]
Balraj, R. [1 ]
Scholand, T. [1 ]
Bai, Z.
Iwelski, S.
机构：
[1] IMC, D-47259 Duisburg, Germany
来源：
2012 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC) | 2012年
关键词：
D O I：
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中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper addresses the problem of feedback design for MU-MIMO (multi-user multiple input multiple output) transmission in 3GPP Long Term Evolution (LTE) systems. The CSI (channel state information)-based feedback introduced in the latest release of LTE, Rel-10 is adopted in MU-MIMO transmission and potential performance gains are demonstrated over Rel-8 CQI/PMI (channel quality indicator/precoding matrix indicator)-based feedback mechanism at the link level. The LTE downlink performance has been evaluated for various MU-MIMO feedback schemes and for low complexity receivers. The results have shown that the CSI-based feedback can make a significant tradeoff between receiver performance and complexity in MU-MIMO therewith reducing the design requirements for advanced receiver concepts.
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页数：5
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