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32 条记录 (耗时 0.03 秒)

    Mode detection for DVB receiver
    7.
    发明授权
    Mode detection for DVB receiver 失效
    DVB接收机的模式检测

    公开(公告)号：US08711673B1

    公开(公告)日：2014-04-29

    申请号：US13113399

    申请日：2011-05-23

    申请人： Jing Fang ,  Runsheng He ,  Zhipei Chi

    发明人： Jing Fang ,  Runsheng He ,  Zhipei Chi

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2666

    摘要： Systems, apparatus and methods are provided for detecting the mode of a received OFDM signal. A received signal may be correlated with one or more time-delayed version of itself resulting in a set of correlation signals. Each correlation signal may be analyzed for one or more characteristics that can be used to determine the symbol length of the received signal. In order to minimize the number of correlations performed, one or more correlations can be used with varying symbol lengths and a fixed guard interval length. The correlation signals can be processed by filters, and the characteristics of the filtered correlation signals can be analyzed to determine the guard interval length of the received signal. In addition to detecting symbol length, the present invention can be used to detect receiver impairment and perform any appropriate compensations.

    摘要翻译： 提供了用于检测接收的OFDM信号的模式的系统，装置和方法。 接收到的信号可以与自身的一个或多个时间延迟版本相关，从而产生一组相关信号。 可以分析每个相关信号的一个或多个特性，其可用于确定接收信号的符号长度。 为了最小化执行的相关数量，可以使用具有变化的符号长度和固定的保护间隔长度的一个或多个相关性。 可以通过滤波器来处理相关信号，并且可以分析滤波的相关信号的特性以确定接收信号的保护间隔长度。 除了检测符号长度之外，本发明可以用于检测接收机损伤并执行任何适当的补偿。

    Channel equalization in receivers
    9.
    发明授权
    Channel equalization in receivers 有权
    接收机中的信道均衡

    公开(公告)号：US08059773B1

    公开(公告)日：2011-11-15

    申请号：US12916167

    申请日：2010-10-29

    申请人： Runsheng He ,  Jing Fang

    发明人： Runsheng He ,  Jing Fang

    IPC分类号： H04B1/10

    CPC分类号： H04L25/022 ,  H04L25/025 ,  H04L25/03159 ,  H04L25/03821

    摘要： Apparatus and methods relating to channel equalization include a method including: generating a first output signal in a frequency domain based on a communications signal of a channel; determining a first channel response based on the first output signal and one or more pilot signals of the communications signal; generating a first equalized signal based on the first output signal and the first determined channel response; generating a first decision signal based on the first equalized signal; generating an output signal in a time domain based on the first decision signal; determining a second channel response based on the time domain output signal; generating a second output signal in the frequency domain based on the second channel response; generating a second equalized signal based on the first and second output signals and the time domain output signal; and generating a second decision signal based on the second equalized signal.

    摘要翻译： 与信道均衡相关的装置和方法包括：一种方法，包括：基于信道的通信信号产生频域中的第一输出信号; 基于所述第一输出信号和所述通信信号的一个或多个导频信号确定第一信道响应; 基于所述第一输出信号和所述第一确定的信道响应产生第一均衡信号; 基于所述第一均衡信号产生第一判定信号; 基于所述第一判定信号在时域中产生输出信号; 基于时域输出信号确定第二信道响应; 基于第二信道响应在频域中产生第二输出信号; 基于第一和第二输出信号和时域输出信号产生第二均衡信号; 以及基于所述第二均衡信号产生第二判定信号。