发明名称 |
Space time spreading and phase sweep transmit diversity |
摘要 |
Described herein is a method and apparatus for transmission that provides the performance of space time spreading (STS) or orthogonal transmit diversity (OTD) and the backwards compatibility of phase sweep transmit diversity (PSTD) without significantly degrading performance in additive white guassan noise (AWGN) conditions using a transmission architecture that incorporates STS/OTD and a form of phase sweep transmit diversity (PSTD) referred to herein as biased PSTD, which involves transmitting a signal and a frequency swept version of the same signal over diversity antennas at different power levels to reduce the depths of nulls normally seen in AWGN conditions when regular PSTD is utilized.
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申请公布号 |
US7042955(B2) |
申请公布日期 |
2006.05.09 |
申请号 |
US20010918391 |
申请日期 |
2001.07.30 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
BENNING ROGER DAVID;BUEHRER R. MICHAEL;KRAML MARK H;POLAKOS PAUL ANTHONY |
分类号 |
H04B7/02;H04B7/005;H04B7/10;H04B7/12;H04B7/216 |
主分类号 |
H04B7/02 |
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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