Limited data spectrum sensing method based on semi-supervised deep neural network
A deep neural network and spectrum sensing technology, applied in neural learning methods, biological neural network models, neural architectures, etc., can solve problems such as large communication overhead, and achieve the effects of reducing interference, reducing dependence, and improving performance
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[0056] The present invention will be further described in detail through specific embodiments below.
[0057] In general, research based on spectrum sensing can be described as the following binary hypothesis testing problem:
[0058]
[0059] Among them, n=0,1,2...,N-1, r(n) represents the complex signal received by the receiver, x(n) represents the PU signal after multipath fading, and v(n) is the Gaussian distribution N (0,σ 2 ) of additive white gaussiannoise (AWGN), H 0 Indicates that the channel is not currently occupied, H 1 Indicates that the channel is occupied.
[0060] This program proposes a limited data spectrum sensing method based on a semi-supervised deep neural network, which includes the following steps:
[0061] S1. Build a deep learning network, including convolutional layer, pooling layer, fully connected layer and output layer;
[0062] S2. Pre-training the deep learning network through limited labeled samples to obtain a pre-training network;
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