发明名称 |
DERIVATION OF EIGENVECTORS FOR SPATIAL PROCESSING IN MIMO COMMUNICATION SYSTEMS |
摘要 |
Techniques for deriving eigenvectors based on steered reference and used for spatial processing. A steered reference is a pilot transmission on one eigenmode of a MIMO channel per symbol period using a steering vector for th at eigenmode. The steered reference is used to estimate both a matrix .SIGMA. o f singular values and a matrix U of left eigenvectors of a channel response matrix H . A matrix U with orthogonalized columns may be derived based on th e estimates of .SIGMA. and U, e.g., using QR factorization, minimum square err or computation, or polar decomposition. The estimates of .SIGMA. and U (or the estimate of .SIGMA. and the matrix U ) may be used for matched filtering of data transmission received via a first link. The estimate U of or the matrix U may also be used for spatial processing of data transmission on a second lin k (for reciprocal first and second links).
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申请公布号 |
CA2509196(A1) |
申请公布日期 |
2004.06.24 |
申请号 |
CA20032509196 |
申请日期 |
2003.12.09 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
KETCHUM, JOHN W.;GAAL, PETER;WALLACE, MARK S. |
分类号 |
H04J99/00;H04B7/04;H04B7/06;H04B7/08;H04L1/06;H04L25/02;H04L25/03;(IPC1-7):H04L25/02 |
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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