| 摘要 |
<p>The automatic equalizer comprises a demodulator (101) for outputting a detection signal which indicates synchronous status as well as demodulating analog base band signals from received signals, an A/D converter (1) for outputting a first digital signal string by sample-quantizing the analog base band signals, an adaptive matched filter (201) for outputting a second digital signal string by converting the first digital signal string, a decision feedback equalizer (301) for outputting a decision signal by equalizing intersymbol interferences in the second digital signal string, a correlator (8-10) for correlating the decision signal with a signal on each tap of the adaptive matched filter, an integrator (11-13) for averaging outputs of the correlator, and a control means (401) for outputting each tap coefficient of the adaptive matched filter derived from multiplying an output of the integrator by a weighting coefficient based on the detection signal. This automatic equalizer has an excellent equalization characteristic to improve the pull-in operation of the control loop under fading. <IMAGE></p> |
