| 摘要 |
<p>A transceiver includes a Downstream Signal Processor (DSP) (230), an Upstream Signal Processor (USP) (232), a Local Oscillator (LO) (234), a differencer (236), a reference signal generator (238), and an estimator (240). The DSP receives an initial downstream signal, a downstream LO signal from the LO, and from the estimator (240) a frequency-offset estimate indicative of a free-running frequency offset included in the initial downstream signal. The DSP uses the LO signal and the estimate to frequency down-convert the initial downstream signal, and also to remove the frequency offset from the initial downstream signal, thereby producing a corrected downstream signal. The USP (232) uses both an upstream LO signal from the LO and the estimate to frequency convert an initial upstream signal so as to produce a frequency pre-corrected upstream signal. <IMAGE></p> |
