Method and device for the equalization 'self-trained ' of a transmission channel signals has a substantially constant modulus

摘要

The invention relates to a method and device for blind equalisation of a transmission channel signals to module substantially constant.le signal at a substantially constant modulus transmitted (wms) is transformed (100) in a complex digital signal (y (n)) . An estimate of the echo signals (x1 (n)) is carried out (101) by adaptive filtering on at least the period of the useful signal to a substantially constant modulus (xo (n)) in a complex digital signal corrected (z (n) ) . The complex digital signal corrected (z (n)) is subjected to a non-linear processing (103) to generate the useful signal to a substantially constant modulus (xo (n)) . A calculation of error (104) between the complex digital signal corrected (z (n)) and the useful signal (xo (n)) makes it possible to control the adaptive filtering and the estimation (101) .application to the mobile telephone, to the transmission of sound signals, to the fm.