| 摘要 |
An adaptive equalizer includes an impulse response detecting section, a region specifying section, an adaptive control section and a delayed decision feedback sequence estimating section. The impulse response detecting section detects an impulse response of a transmission path from a training signal. A reception signal includes the training signal and a data signal following the training signal. The region specifying section outputs a region specifying signal used to specify a sequence estimation region and an adaptive control region of the detected impulse response. The adaptive control section updates the detected impulse response using an adaptive algorithm based on the data signal and an estimation result, and outputs the updated impulse response for the determined sequence estimation region. The delayed decision feedback sequence estimating section performs a sequence estimation based on the updated impulse response for the determined sequence estimation region and the data signal to produce the estimation result, and outputs the estimation result to the adaptive control section.
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