Method and apparatus for estimating signal-to-noise ratio, noise power, and signal power
    1.
    发明授权
    Method and apparatus for estimating signal-to-noise ratio, noise power, and signal power 有权
    用于估计信噪比,噪声功率和信号功率的方法和装置

    公开(公告)号:US07773681B2

    公开(公告)日:2010-08-10

    申请号:US11461658

    申请日:2006-08-01

    IPC分类号: H04K1/10

    CPC分类号: H04L27/2613 H04B17/336

    摘要: In a wireless communication system, a method and apparatus for noise estimation of a received OFDM communication signal, wherein the signal comprises a data frame with a preamble having at least one long training field (LTF) containing two substantially similar OFDM symbols, comprise examining the LTF for substantially similar OFDM symbols. The noise power in the signal is estimated and the received signal power is measured. The signal to noise ratio is calculated and the signal power is determined by subtracting the noise power from the signal noise.

    摘要翻译: 在无线通信系统中,一种用于接收的OFDM通信信号的噪声估计的方法和装置,其中所述信号包括具有前导码的数据帧,前导码具有包含两个基本上相似的OFDM符号的至少一个长训练场(LTF),包括检查 LTF用于基本相似的OFDM符号。 估计信号中的噪声功率并测量接收信号功率。 计算信噪比,通过从信号噪声中减去噪声功率来确定信号功率。