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Delayed decision feedback sequence estimator for determining optimal estimation region with small calculation quantity
Delayed decision feedback sequence estimator for determining optimal estimation region with small calculation quantity
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机译：用于确定计算量小的最优估计区域的延迟决策反馈序列估计器
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摘要
In a delayed decision feedback sequence estimating apparatus, a transmission channel characteristic is detected for a training signal. A timing detecting unit detects when there is obtained a maximum of ratios of a summation value of absolute values of amplitude components of the 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 the transmission channel characteristic for a decision feedback equalization region and a summation value of absolute values of amplitude components of the transmission channel characteristic for a region other than the maximum likelihood sequence estimation region and the decision feedback equalization region, as an out-of-estimation region, to generate a timing signal. A delayed decision feedback sequence estimating unit executes an estimation of an inputted reception signal with a transmission distortion based on the transmission channel characteristic and the timing signal to output a transmission signal.
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