Luyện thi THPT QG 2018
Digital communication receivers P6 - P1
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Digital communication receivers P6 - P1
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Performance of Synchronizers Analysis During data transmission the synchronizer provides an estimate which most of the time exhibits small fluctuations about the true value. The synchronizer is operating in the tracking mode. The performance measure of this mode is the variance of the estimate. In Section 6.1 and the appendix (Section 6.2) we derive a lower bound on the variance of these estimates. This bound will allow us to compare the variance of practical estimators to that of the theoretical optimum and thus assess the implementation loss. In Section 6.3 we compute the variance of carrier and symbol synchronizers of practical...
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