Frequency spectrum sensing method based on signal frequency spectrum envelope
A signal spectrum and spectrum sensing technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of poor spectrum sensing performance and low time-domain correlation when uncorrelated
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[0015] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.
[0016] The present invention proposes a spectrum sensing method based on signal spectrum envelope, and its flow chart is as follows figure 1 As shown, it mainly includes the following steps:
[0017] ①Assuming that the cognitive radio system uses two receiving antennas to receive continuous radio frequency signals in the time domain, the time domain continuous radio frequency signals received by the two receiving antennas are all expressed as a function of time t, and the first receiving antenna receives The continuous radio frequency signal in the time domain is denoted as x 1 (t), denote the time domain continuous radio frequency signal received by the second receiving antenna as x 2 (t).
[0018] ②Respectively, the time domain continuous radio frequency signal x received by the first receiving antenna 1 (t) and the time domain continuous radio frequency sig...
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