Frequency segmentation channel equalization method
A technology of channel equalization and frequency domain equalization, which is applied in the field of array signals, can solve problems such as difficult superposition and simultaneous realization, limited engineering application of frequency domain equalization, large storage space, etc., to improve processing performance, improve cancellation performance, reduce The effect of storage space
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[0065] In one embodiment of the present invention, the channel frequency domain equalization filter frequency characteristics e=[e[1],e[2],...,e[P]] T , P=256; f s =4MHz; the baseband complex signal x of the reference channel and the channel to be equalized M =[x M [1],x M [2],...,x M [L]] T , x A =[x A [1],x A [2],...,x A [L]] T L=1800; signal bandwidth BW=3MHz.
[0066] The equalization process is as follows:
[0067] 1. Take N=2048 to find the N-point frequency characteristics of the channel frequency domain equalization filter
[0068] e N O = FFT ( IFFT ( e , 2048 ) , 2048 )
[0069] 2. Find the filter coefficients of each segment of segment equalization, and reduce the actual coefficients used from 2048 points to 24 point...
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