Automatic passband equalizer for data transmission systems

Details Automatic passband equalizer for data transmission systems Automatic passband equalizer for data transmission systems

H - Electricity

03

H

333/27, 328/0.2

H03H 7/00 (2006.01) H04L 27/01 (2006.01)

Patent

CA 1046597

ABSTRACT: Passband equalizer in a system for data transmission by means of phase modulation. The equalizer comprises two filters in quadrature with adjustable coefficients. Difference circuits connected to the equalizer output form difference signals between the two quadrature components of the equalizer output signal and the two components of an estimated signal which is especially formed from phase jumps associated with the transmitted data signal. A pair of difference circuits is associated with each pair of corresponding coefficients of the two filters and forms difference available in the two filters in places corresponding with the said pair of coefficients. The changes in the coefficients are calculated from the above said difference signals. -??-

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