Modulation identification method under MIMO related channel based on machine learning algorithm
A technology of machine learning and modulation recognition, applied in the field of communication, can solve the problem of difficulty in signal recognition at the receiving end
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[0108] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0109] A modulation recognition method under MIMO correlation channel based on machine learning algorithm, such as figure 1As shown, an extreme learning machine is designed and applied to verify the performance of the channel. Firstly, the modulating signal is divided into three categories, φ 1 ={BPSK,QPSK,8PSK},φ 2 ={16QAM,64QAM},φ 3 ={φ 1 ,φ 2}; where φ 1 and φ 2 represent signals of the same category, φ 3 Represents different types of mixed signals; secondly, the signal is passed through the MIMO related channel, and the parameter characteristics of the signal are extracted at the receiving end; finally, the machine learning algorithm completes the modulation classification of the signal. The invention verifies the system performance of the machine learning algorithm under signal blind identification, multipath effect caused by MIMO channel and dif...
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