Decision feedback equalizer for digital tv and method thereof

Details Decision feedback equalizer for digital tv and method thereof Decision feedback equalizer for digital tv and method thereof

H - Electricity

04

N

H04N 7/015 (2006.01) H03M 13/25 (2006.01) H04L 25/03 (2006.01)

Patent

CA 2516249

The conventional decision feedback equalizer has a drawback that can~t decide symbols correctly because a simple slicer is used as a symbol detector. A decision feedback equalizer as a symbol detector uses a Trellis Coded Modulation (TCM) decoder whose Trace Back depth is 1 (TBD=1), to thereby decide symbols correctly without decoding delay.

L'égaliseur à décision rétroactive classique présente cette lacune qu'il ne peut déterminer des symboles correctement dans la mesure où un simple trancheur est utilisé comme détecteur de symboles. Un égaliseur à décision rétroactive exploitable comme détecteur de symboles met en oeuvre un décodeur à modulation par codage en treillis (MCT), dont le nombre d'états est 1 (TBD=1), pour déterminer correctement les symboles, sans retard de décodage.

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