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    • 6. 发明授权
    • Mode detection for DVB receiver
    • DVB接收机的模式检测
    • US08711673B1
    • 2014-04-29
    • US13113399
    • 2011-05-23
    • Jing FangRunsheng HeZhipei Chi
    • Jing FangRunsheng HeZhipei Chi
    • H04J11/00
    • H04L27/2666
    • 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.
    • 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。
    • 8. 发明授权
    • Channel equalization in receivers
    • 接收机中的信道均衡
    • US08059773B1
    • 2011-11-15
    • US12916167
    • 2010-10-29
    • Runsheng HeJing Fang
    • Runsheng HeJing Fang
    • H04B1/10
    • H04L25/022H04L25/025H04L25/03159H04L25/03821
    • 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.
    • 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。
    • 10. 发明授权
    • Carrier squelch processing system and apparatus
    • 载波静噪处理系统和装置
    • US06192226B1
    • 2001-02-20
    • US09217302
    • 1998-12-21
    • Jing Fang
    • Jing Fang
    • H04B110
    • H03G3/344
    • Carrier squelch decisions are made by performing the steps of receiving an input signal (D), free of DC offset, having desired and undesired signal components, extracting the desired signal components (M) from the input signal, weighting a function of the input signal (D) by a function of the desired signal (M) to produce a weighted signal (W), determining a characteristic of the weighted signal (W), and performing carrier squelch when the characteristic exceeds a threshold.
    • 通过执行以下步骤来进行载波静噪决定:步骤:接收没有DC偏移的输入信号(D),其具有期望的和不需要的信号分量,从输入信号中提取期望的信号分量(M),对输入信号的功能进行加权 (D)通过所需信号(M)的函数产生加权信号(W),确定加权信号(W)的特性,并且当特性超过阈值时执行载波静噪。