公开(公告)号：US20130188668A1

公开(公告)日：2013-07-25

申请号：US13714099

申请日：2012-12-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiqun Chen ,  Gengshi Wu ,  Feng Li ,  Xiuqin Peng

IPC: H04L25/02

CPC classification number: H04L25/02 ,  H04B1/7113 ,  H04B1/7115 ,  H04L25/0212

Abstract: Embodiments of the present invention provide a multipath searching method and a multipath searcher, to improve accuracy of delay estimation, thereby improving performance of a receiver. The method includes: performing processing on received signals ri(t) and pilot sequences pi(t) to obtain upsampling signals y(τ); subtracting contribution values of a current multipath waveform to other multipath waveforms by using a raised cosine function with a peak position set to zero and according to a global maximum value of |y(τ)|2 and a total of M sampling points {circumflex over (τ)}l(m) near the global maximum value, to obtain an upsampling signal yL(τ) having a minimum residual in M groups of upsampling signals yL(m)(τ); and obtaining a time delay power spectrum of the upsampling signal yL(τ) having the minimum residual.

Abstract translation: 本发明的实施例提供一种多路径搜索方法和多路径搜索器，以提高延迟估计的精度，从而提高接收机的性能。 该方法包括：对接收信号ri（t）和导频序列pi（t）执行处理以获得上采样信号y（τ）; 通过使用峰值位置设置为零并根据全局最大值| y（τ）| 2和总共M个采样点（回旋过程），将当前多径波形的贡献值减去其他多径波形 （τ）接近全局最大值，以获得在M组上采样信号yL（m）（τ）中具有最小残差的上采样信号yL（τ）; 并获得具有最小残差的上采样信号yL（τ）的时间延迟功率谱。

公开(公告)号：US08824525B2

公开(公告)日：2014-09-02

申请号：US13714099

申请日：2012-12-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiqun Chen ,  Gengshi Wu ,  Feng Li ,  Xiuqin Peng

IPC: H04B1/00 ,  H04L25/02 ,  H04B1/7115 ,  H04B1/7113

CPC classification number: H04L25/02 ,  H04B1/7113 ,  H04B1/7115 ,  H04L25/0212

Abstract: Embodiments of the present invention provide a multipath searching method and a multipath searcher, to improve accuracy of delay estimation, thereby improving performance of a receiver. The method includes: performing processing on received signals ri(t) and pilot sequences pi(t) to obtain upsampling signals y(τ); subtracting contribution values of a current multipath waveform to other multipath waveforms by using a raised cosine function with a peak position set to zero and according to a global maximum value of |y(τ)|2 and a total of M sampling points {circumflex over (τ)}1(m) near the global maximum value, to obtain an upsampling signal yL(τ) having a minimum residual in M groups of upsampling signals yL(m)(τ); and obtaining a time delay power spectrum of the upsampling signal yL(τ) having the minimum residual.

Abstract translation: 本发明的实施例提供一种多路径搜索方法和多路径搜索器，以提高延迟估计的精度，从而提高接收机的性能。 该方法包括：对接收信号ri（t）和导频序列pi（t）执行处理以获得上采样信号y（τ）; 通过使用峰值位置设置为零并根据全局最大值| y（τ）| 2的累加余弦函数和总共M个采样点（回旋过程），将当前多径波形的贡献值减去其他多径波形 （τ）} 1（m），以获得具有最小残差的上采样信号yL（m）（τ）的上采样信号yL（τ）; 并获得具有最小残差的上采样信号yL（τ）的时间延迟功率谱。