| 摘要 |
<p>A method of noise whitening comprises estimating (201) the noise of a channel; calculating (202) the power spectrum of the channel; adding (203) the estimated noise and the calculated power spectrum to build (204) a positive definite band matrix; applying (205) symmetric factorisation to the matrix; deriving (206) the spectral factorisation of the channel from the symmetric factorisation; approximating (207) the spectral factorisation; calculating (208) the noise whitening prefilter settings from the derived spectral factorisation and the estimated noise of the channel; and prefiltering the received signal to noise whiten the signal. <IMAGE></p> |
