Vsb-moe pre-equalizer for 8-vsb dtv

Details Vsb-moe pre-equalizer for 8-vsb dtv Vsb-moe pre-equalizer for 8-vsb dtv

H - Electricity

04

B

H04B 7/005 (2006.01) H04B 1/68 (2006.01) H04N 5/14 (2006.01) H04N 5/44 (2006.01)

Patent

CA 2388577

A vestigial sidehand (VSB) modulation minimum output (MOE) pro- equalizer operating on a received ATSC 8-VSB DTV signal includes one or more of an adaptive food-forward filter and an adaptive feedback filter each utilizing only reel adaptive coefficients, with the direct term for the overall filter constrained to unity to remove one degrees of filter parameterization freedom. Adaptation of the filter(s) is based on minimizing a blind energy cost function, and is independent of adaptation of a conventional adaptive channel equalizer. The pre-equalized signal is passed to the conventional adaptive equalizer for channel equalization utilizing DFE, IIR-CMA, etc., resulting in performance improvements including faster convergence and greater robustness with relatively small implementation costs,

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