Spectrum correlation characteristics-based frequency spectrum detection method
A spectrum detection and related feature technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of restricting the reliability of spectrum detection and low resolution, and achieve good spectrum detection performance, high resolution, and improved performance. Effect
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[0018] Below in conjunction with accompanying drawing and embodiment the present invention will be further described
[0019] The specific design steps of the improved spectrum detection method based on spectral correlation features are as follows:
[0020] a. Calculate the MVDR spectrum of the sampling signal of the transmitted signal: This algorithm requires that the transmitted signal of the primary user transmitter is known, and the transmitted signal is set to x(t), and the sampling frequency is f s Hertz (Hz) samples x(t), and the sampling interval is T s seconds, then the sampling signal of the sent signal is x(l)=x(lT s ), the sample autocorrelation matrix of x(l) with length L is The order of is M, and the value of M is determined by the requirement of the perception time on the complexity of the algorithm. according to Calculate the MVDR spectrum of x(l) k=0,1,...,L-1.
[0021] b. Calculate the MVDR spectrum of the sampling signal of the received signal: set...
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