发明名称 |
Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems |
摘要 |
Techniques for processing a data transmission at the transmitter and receiver. In an aspect, a time-domain implementation is provided which uses frequency-domain singular value decomposition and "water-pouring" results to derive time-domain pulse-shaping and beam-steering solutions at the transmitter and receiver. The singular value decomposition is performed at the transmitter to determine eigen-modes (i.e., spatial subchannels) of the MIMO channel and to derive a first set of steering vectors used to "precondition" modulation symbols. The singular value decomposition is also performed at the receiver to derive a second set of steering vectors used to precondition the received signals such that orthogonal symbol streams are recovered at the receiver, which can simplify the receiver processing. Water-pouring analysis is used to more optimally allocate the total available transmit power to the eigen-modes, which then determines the data rate and the coding and modulation scheme to be used for each eigen-mode.
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申请公布号 |
US2004234004(A1) |
申请公布日期 |
2004.11.25 |
申请号 |
US20040884305 |
申请日期 |
2004.07.02 |
申请人 |
KETCHUM JOHN W.;WALLACE MARK;HOWARD STEVEN J.;WALTON JAY ROD |
发明人 |
KETCHUM JOHN W.;WALLACE MARK;HOWARD STEVEN J.;WALTON JAY ROD |
分类号 |
H04J99/00;H04B7/04;H04L1/00;H04L25/03;H04L27/26;(IPC1-7):H04L1/02 |
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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