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Abstract
The intelligent detection algorithm of MIMO wideband frequency modulated signal based on orthogonal matching tracking has the disadvantages of high network congestion rate, high noise content in signal and large memory space in complex multipath channel. Intelligent detection algorithm of MIMO wideband frequency modulated signal in complex multipath channel is proposed based on fractional Fourier transform. The noise in the signal is analyzed with the hierarchical search introducing into the signal detection process. The signal normalization process is performed to complete the signal detection algorithm. Experiments show that the algorithm can effectively reduce the noise content in the signal, occupying small memory space of the computer to reduce the impact of detection on the computer network.