| 摘要 |
<p>A method and a circuit for training the tap coefficient of an adaptive equalizer, which are characterized in that both the target impulse response window and the filter coefficient window are made fixed after a predetermined condition is satisfied. Thereby, the convergence of training can be avoided from being late due to the affect such as noise etc. The predetermined condition includes: (1)when the ratio of power outside the window of target impulse response and power inside the window of target impulse response is less than a predetermined value, (2)when the ratio of power outside the window of filter coefficient and power inside the window of filter coefficient is less than a predetermined value, and (3) when the loop of the impulse response update step, the impulse response window step, the filter coefficient update step and the filter coefficient window step is repeated a predetermined number of times. <IMAGE></p> |
