| 摘 要： | 1 IntroductionOne thing can not be differentiated from another if there is no difference between them.Signal detection is intended to differentiate whether only noise or the signal is in fact presentin the received sequence. Either of the two hypotheses must be declared, which is called dualchoice detection. In ideal conditions, the optimum detector for a determined signal is a matchedfilter or a replica correlator in terms of both the maximum out put' st anal t o- no ise r at ic crit erionand…
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