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31. 发明授权

US06563812B1 Method and apparatus for detecting multiple signals in a CDMA network 有权
标题翻译：用于在CDMA网络中检测多个信号的方法和装置
公开(公告)号：US06563812B1
公开(公告)日：2003-05-13
申请号：US09416279
申请日：1999-10-12
申请人： Parthapratim De
发明人： Parthapratim De
IPC分类号： H04B1707
CPC分类号： H04B1/71052
摘要： A receiver in a code-division-multiple-access network includes a forward detector, a first feedback detector, a set of second feedback detectors, a slicer and an arithmetic logic unit for detecting each one of the multiple transmitted signals. The forward detector has an input connected to receive the sum of the multiple transmitted signals. The arithmetic logic has an input connected to an output of the forward detector. The slicer has an input connected to an output of the arithmetic logic unit. The first feedback detector has an input connected to an output of the slicer and an output is connected to the input of the arithmetic logic unit. Each of the second feedback detectors has an input connected to the output of a slicer for each of the other slicers and an output is connected to the input of the arithmetic logic unit. The output of the slicer provides the detected signal, for each transmitter.
摘要翻译：码分多址网络中的接收机包括前向检测器，第一反馈检测器，一组第二反馈检测器，限幅器和用于检测多个发射信号中的每一个的算术逻辑单元。正向检测器具有连接的输入端以接收多个发射信号的和。算术逻辑具有连接到正向检测器的输出的输入。切片器具有连接到算术逻辑单元的输出的输入。第一反馈检测器具有连接到限幅器的输出的输入端，并且输出端连接到算术逻辑单元的输入端。每个第二反馈检测器具有连接到用于每个其他限幅器的限幅器的输出的输入，并且输出连接到算术逻辑单元的输入。切片器的输出为每个发射器提供检测到的信号。

32. 发明授权

US06526093B1 Method and apparatus for equalizing a digital signal received via multiple transmission paths 失效
标题翻译：用于均衡经由多个传输路径接收的数字信号的方法和装置
公开(公告)号：US06526093B1
公开(公告)日：2003-02-25
申请号：US09262377
申请日：1999-03-04
申请人： Jay Bao , Parthapratim De , Tommy C. Poon
发明人： Jay Bao , Parthapratim De , Tommy C. Poon
IPC分类号： H03H740
CPC分类号： H04L25/03057 , H04L25/03987 , H04L2025/03382 , H04L2025/0342 , H04L2025/0349 , H04L2025/03694
摘要： In a receiver, an adaptive decision feedback equalizer receives broadcast signals having multipath interference. The equalizer includes a feed-forward, a feedback, and a partial feedback forward filter. The equalizer also includes a slicer and two accumulators. An output from the slicer is processed by the feedback filter and the partial feedback filter. The output from the feedback filter is subtracted from output of the feed-forward filter to form the input to the slicer, and the output of the partial feedback filter is subtracted from the received signal to form the input for the feed-forward filter to reduce the multipath interference.
摘要翻译：在接收机中，自适应判决反馈均衡器接收具有多路径干扰的广播信号。均衡器包括前馈，反馈和部分反馈正向滤波器。均衡器还包括一个切片器和两个累加器。来自分片器的输出由反馈滤波器和部分反馈滤波器处理。来自反馈滤波器的输出从前馈滤波器的输出中减去以形成到限幅器的输入，并且从接收信号中减去部分反馈滤波器的输出，以形成前馈滤波器的输入以减少多路径干扰。

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