Patent ID: 6134280
Filing Date: 2000-10-17
Classification: H04L

Abstract:
A delayed decision feedback sequence estimating apparatus comprising:a transmission channel characteristic detecting unit for detecting a transmission channel characteristic for a training signal;a timing detecting unit for detecting when there is obtained a maximum of ratios of a summation value of absolute values of amplitude components of said transmission channel characteristic for a maximum likelihood sequence estimation region to an addition of a value obtained by multiplying, by a predetermined value, a summation value of absolute values of amplitude components of said transmission channel characteristic for a decision feedback equalization region and a summation value of absolute values of amplitude components of said transmission channel characteristic for a region other than said maximum likelihood sequence estimation region and said decision feedback equalization region, as an out-of-estimation region, to generate a timing signal; anda delayed decision feedback sequence estimating unit for executing a maximum likelihood sequence estimation of an inputted reception signal with a transmission distortion based on said transmission channel characteristic detected by said transmission channel characteristic detecting unit and said timing signal outputted from said timing detecting unit to output a transmission signal.