Repositioning of equalizer tap-gain coefficients

Details Repositioning of equalizer tap-gain coefficients Repositioning of equalizer tap-gain coefficients

H - Electricity

03

K

328/0.2

H03K 5/156 (2006.01) H04B 1/00 (2006.01) H04L 25/03 (2006.01)

Patent

CA 1041613

REPOSITIONING OF EQUALIZER TAP-GAIN COEFFICIENTS Abstract of the Disclosure Start-up performance of an automatic transversal equalizer is enhanced when known, but unsynchronized, pseudorandom test words having substantially as many elements as there are equalizer taps are correlated at the receiver location in a digital data transmission system to obtain an ordered set of tap-gain coefficients of sufficient precision to open the received eye pattern. The largest tap-gain coefficient of the ordered set thus derived is rapidly ascertained and aligned with a pre- determined reference tap position entirely by digital means. The technique is readily adapted to phase- modulated and quadrature amplitude-modulated data systems where quadrature-related coefficient sets, i.e., the coefficients are complex numbers, are required.

231595

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