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1. 发明授权

US07035599B2 Biased phase sweep transmit diversity 失效
公开(公告)号：US07035599B2
公开(公告)日：2006-04-25
申请号：US09918393
申请日：2001-07-30
申请人： Roger David Benning , R. Michael Buehrer , Robert Atmaram Soni
发明人： Roger David Benning , R. Michael Buehrer , Robert Atmaram Soni
IPC分类号： A04B1/02
CPC分类号： H04B7/0615 , H04B7/0667 , H04B7/0682
摘要： Disclosed is a method and apparatus of transmit diversity that is backward compatible and does not significantly degrade performance in additive white guassan noise (AWGN) conditions using a transmission architecture that incorporates a form of phase sweep transmit diversity (PSTD) referred to herein as biased PSTD. Biased PSTD involves transmitting a signal and a frequency swept version of the same signal over diversity antennas at different power levels. By transmitting the two signals at different power levels, the depths of nulls normally seen in AWGN conditions when PSTD is utilized is reduced and performance degradation in AWGN conditions is mitigated.

2. 发明授权

US06920314B2 Symmetric sweep phase sweep transmit diversity 失效
标题翻译：对称扫描相位扫描发射分集
公开(公告)号：US06920314B2
公开(公告)日：2005-07-19
申请号：US09918392
申请日：2001-07-30
申请人： Roger David Benning , R. Michael Buehrer , Paul Anthony Polakos , Robert Atmaram Soni
发明人： Roger David Benning , R. Michael Buehrer , Paul Anthony Polakos , Robert Atmaram Soni
IPC分类号： H04B7/06 , A04B1/02
CPC分类号： H04B7/0669 , H04B7/0678
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 degrading performance of either STS or PSTD using a symmetric sweep PSTD transmission architecture. In one embodiment, a pair of signals s1 and s2 are split into signals s1(a) and s1(b) and signals s2(a) and s2(b), respectively. Signal s1 comprises a first STS/OTD signal belonging to an STS/OTD pair, and signal s2 comprises a second STS/OTD signal belonging to the STS/OTD pair. Signals s1(b) and s2(b) are phase swept using a pair of phase sweep frequency signals that would cancel out any self induced interference. For example, the pair of phase sweep frequency signals utilize a same phase sweep frequency with one of the phase sweep frequency signals rotating in the opposite direction plus an offset of π relative to the other phase sweep frequency signal. The resultant phase swept signals s1(b) and s2(b) are added to signals s2(a) and s1(a) before being amplified and transmitted.
摘要翻译：这里描述了一种用于传输的方法和装置，其提供空间时间扩展（STS）或正交发射分集（OTD）的性能以及相位扫描发射分集（PSTD）的向后兼容性，而不会降低使用对称的STS或PSTD的性能扫描PSTD传输架构。在一个实施例中，一对信号s 1和s 2 2被分割成信号s 1（a）和s 1 < （b）和信号s 2（a）和s 2（b）。信号S1 <1>包括属于STS / OTD对的第一STS / OTD信号，信号s 2包括属于STS / OTD对的第二STS / OTD信号。使用一对可以消除任何自身干扰的相位扫描频率信号来相位扫描信号s 1（b）和s 2（b）。例如，该对相位扫描频率信号利用相同的相位扫描频率，其中相位扫描频率信号中的一个相反方向旋转加上相对于另一个相位扫描频率信号的pi偏移。所得到的相位扫描信号s 1（b）和s 2（b）被加到信号s2（a）和s

3. 发明授权

US06850741B2 Method for selecting switched orthogonal beams for downlink diversity transmission 有权
标题翻译：用于选择用于下行链路分集传输的交换正交波束的方法
公开(公告)号：US06850741B2
公开(公告)日：2005-02-01
申请号：US10116240
申请日：2002-04-04
申请人： Zhongding Lei , Po Shin Francois Chin , Ying Chang Liang
发明人： Zhongding Lei , Po Shin Francois Chin , Ying Chang Liang
IPC分类号： H04B7/04 , H04B7/06 , A04B1/02
CPC分类号： H04B7/0695 , H04B7/0408 , H04B7/0617 , H04B7/0669
摘要： A scheme for selecting two beams in a switched beam antenna system for providing downlink communications in a downlink channel, the switched beam antenna system providing uplink reception and downlink transmission is described. The scheme involves selecting a pair of beams based on the uplink reception of the switched beam antenna system, and determining from the pair of beams a corresponding pair of orthogonal beams. The scheme also involves providing the pair of orthogonal beams as a pair of transmit beams for the downlink transmission of the switched beam antenna system.
摘要翻译：描述了用于在下行链路信道中提供下行链路通信的切换波束天线系统中选择两个波束的方案，提供上行链路接收和下行链路传输的切换波束天线系统。该方案包括基于切换波束天线系统的上行链路接收来选择一对波束，以及从该对波束确定一对相应的正交波束。该方案还涉及将一对正交波束提供为用于切换波束天线系统的下行链路传输的一对发射波束。

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