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1. 发明授权

US5754603A Pseudo random number sequence synchronization in communications systems 失效
标题翻译：通信系统中的伪随机数序列同步
公开(公告)号：US5754603A
公开(公告)日：1998-05-19
申请号：US688670
申请日：1996-07-29
申请人： Philip H. Thomas , Gang Li , Rui Wang , Iouri Trofimov , Alexandre Chloma , Mikhail Bakouline , Vitali Kreindeline
发明人： Philip H. Thomas , Gang Li , Rui Wang , Iouri Trofimov , Alexandre Chloma , Mikhail Bakouline , Vitali Kreindeline
IPC分类号： H04B1/7075 , H04B1/7077 , H04L7/04 , H04L7/00
CPC分类号： H04B1/70752 , H04L7/043 , H04B1/70775
摘要： A method of synchronizing to a pseudo random sequence, which can be generated by a linear feedback shift register having k stages and p intermediate taps, where k and p are positive integers and k>p, and a synchronization arrangement for carrying out the method are described. A received symbol sequence is supplied to a k-stage shift register with p intermediate taps in positions corresponding to the p taps of the linear feedback shift register. A respective correlation signal is recursively added at an input for the received symbol sequence and at each intermediate tap. Each correlation signal is produced by correlating at least two signals from said input, intermediate taps, and output other than the signal to which the respective correlation signal is added. The invention is particularly applicable to pilot synchronization in CDMA terminals.
摘要翻译：一种与伪随机序列同步的方法，其可以由具有k个级和p个中间抽头的线性反馈移位寄存器生成，其中k和p是正整数，k> p，并且用于执行该方法的同步装置是描述。接收的符号序列被提供给具有对应于线性反馈移位寄存器的p抽头的位置中的p个中间抽头的k级移位寄存器。相应的相关信号在接收的符号序列的输入端和每个中间抽头处被递归地相加。通过将来自所述输入，中间抽头和输出的至少两个信号与相关相关信号相加的信号相关联来产生每个相关信号。本发明特别适用于CDMA终端中的导频同步。

2. 发明授权

US06396885B1 Co-channel interference reduction in wireless communications systems 有权
标题翻译：无线通信系统中的同频干扰减少
公开(公告)号：US06396885B1
公开(公告)日：2002-05-28
申请号：US09203755
申请日：1998-12-02
申请人： Zhi Ding , Philip H. Thomas , Rui Wang , Wen Tong
发明人： Zhi Ding , Philip H. Thomas , Rui Wang , Wen Tong
IPC分类号： H04L102
CPC分类号： H04B7/0848
摘要： Co-channel interference with a desired signal in a receiver arrangement of a TDMA cellular radio communications system having two antennas and receivers for providing two received signals is reduced. Two sampled signals are derived from each of the two received signals by sampling the respective received signal at twice the symbol rate of the system and separating alternate samples at twice the symbol rate to produce the two sampled signals each with different samples at the symbol rate, providing a total of four sampled signals from the two antennas. These signals are linearly combined with respective weights to produce an output signal, the weights being determined to reduce co-channel interference with the desired signal represented by the output signal.
摘要翻译：减少了具有两个用于提供两个接收信号的天线和接收机的TDMA蜂窝无线电通信系统的接收机布置中的期望信号的同信道干扰。通过以两倍的系统的符号速率对相应的接收信号进行采样，以两倍的符号速率分离替代采样，从而从两个接收信号中的每一个导出两个采样信号，以产生每个具有符号速率的不同采样的两个采样信号，提供来自两个天线的总共四个采样信号。这些信号与相应的权重线性组合以产生输出信号，确定权重以减少与由输出信号表示的期望信号的同信道干扰。

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