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User Data based Estimation of Channel Impulse Response and its Length in multicarrier communication environments
User Data based Estimation of Channel Impulse Response and its Length in multicarrier communication environments
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机译:多载波通信环境中基于用户数据的信道冲激响应及其长度估计
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摘要
In a receiver for processing OFDM encoded signals, wherein the OFDM encoded digital signals are transmitted by means of a symbol in each of subcarrier frequency channels, with at least some of said subcarriers containing user data symbols, an initial estimate of a channel frequency response is formed from magnitudes of user data symbols received in those subcarriers. Then, a correlation function of a channel impulse response is estimated by performing an inverse Fourier transform on the initial estimate of the channel frequency response, and the length of the channel impulse response is estimated by examining peaks in the estimated correlation function of the channel impulse response.
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