发明名称 |
POWER CONTROL FOR PARTIAL CHANNEL-STATE INFORMATION (CSI) MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) SYSTEMS |
摘要 |
Techniques for controlling the transmit power for a number of data streams in a wireless multi-channel (e.g., MIMO) communication system. In one method, a number of received symbol streams are initially processed in accordance with a particular (e.g., CCMI, CCMI-SC, MMSE, or MMSE-SC) receiver processing technique to provide a number of detected data streams. The post-detection SNRs of the detected data streams are estimated, and each SNR that exceeds a setpoint is identified. This setpoint may correspond to (1) the SNR needed to achieve the maximum allowed spectral efficiency or (2) the target SNR needed to achieve a specified spectral efficiency. A new (or adjusted) transmit power for each detected data stream associated with a post-detection SNR that exceeds the setpoint is determined and used for the data stream. Different power control schemes are provided for different classes of receiver processing techniques with different characteristics. |
申请公布号 |
WO03071711(A2) |
申请公布日期 |
2003.08.28 |
申请号 |
WO2003US05371 |
申请日期 |
2003.02.19 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
MEDVEDEV, IRINA;WALTON, JAY R.;KETCHUM, JOHN W. |
分类号 |
H04J99/00;H04B7/005;H04B7/04;H04B7/06;H04L1/00;H04L1/06 |
主分类号 |
H04J99/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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