发明公开
EP1856832A1 SYSTEMS AND METHODS FOR REDUCING UPLINK RESOURCES TO PROVIDE CHANNEL PERFORMANCE FEEDBACK FOR ADJUSTMENT OF DOWNLINK MIMO CHANNEL DATA RATES
审中-公开
系统和方法以减少占用资源用于提供MIMO信道的线路功率反馈调整数据速率向下方向
- 专利标题： SYSTEMS AND METHODS FOR REDUCING UPLINK RESOURCES TO PROVIDE CHANNEL PERFORMANCE FEEDBACK FOR ADJUSTMENT OF DOWNLINK MIMO CHANNEL DATA RATES
- 专利标题（中）： 系统和方法以减少占用资源用于提供MIMO信道的线路功率反馈调整数据速率向下方向
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申请号： EP06738520.3申请日： 2006-03-13
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公开(公告)号： EP1856832A1公开(公告)日： 2007-11-21
- 发明人: KIM, Byoung-Hoon
- 申请人： QUALCOMM INCORPORATED
- 申请人地址： 5775 Morehouse Drive San Diego, California 92121 US
- 专利权人： QUALCOMM INCORPORATED
- 当前专利权人： QUALCOMM INCORPORATED
- 当前专利权人地址： 5775 Morehouse Drive San Diego, California 92121 US
- 代理机构： Wagner, Karl H.
- 优先权： US78470 20050311
- 国际公布： WO2006099525 20060921
- 主分类号： H04L1/00
- IPC分类号： H04L1/00 ; H04L1/20
摘要：
Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.
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