| 摘要 |
<p>A method and apparatus are disclosed for reducing dispersion problems in data signals received over a channel, such as a fiber channel. A receiver processes the received data on parallel branches at a rate that is slower than the original clock rate. Channel equalization techniques can thus be applied to fiber channels despite the very high clock rates of the received signal. The clock rate of the received signal is reduced by an arbitrary factor N for sampling and digitizing the analog signal at the output of the fiber channel. The parallel analog samples are digitized before digital signal processing (DSP) techniques are applied by an adaptive digital signal processor to perform data detection. The adaptive digital signal processor may be embodied, for example, as an adaptive channel equalizer that utilizes an adaptive feed forward equalizer (FFE), or as a maximum likelihood sequence estimator (MLSE), such as a Viterbi detector. <IMAGE></p> |
