发明名称 |
DERIVATION OF EIGENVECTORS FOR SPATIAL PROCESSING IN MIMO COMMUNICATION SYSTEMS |
摘要 |
<p>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 that eigenmode. The steered reference is used to estimate both a matrix Sigma of 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 the estimates of Sigma and U, e.g., using QR factorization, minimum square error 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 link (for reciprocal first and second links).</p> |
申请公布号 |
WO2004054191(A1) |
申请公布日期 |
2004.06.24 |
申请号 |
WO2003US39392 |
申请日期 |
2003.12.09 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
KETCHUM, JOHN, W.;WALLACE, MARK, S.;GAAL, PETER |
分类号 |
H04B7/04;H04J99/00;H04B7/06;H04B7/08;H04L1/06;H04L25/02;H04L25/03;(IPC1-7):H04L25/02 |
主分类号 |
H04B7/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|