Nonlinear self-feedback chaotic neural network signal blind detection method
A neural network and self-feedback technology, applied in the field of nonlinear self-feedback chaotic neural network signal blind detection, can solve the problem of slow energy function convergence speed and other problems
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[0057] Below in conjunction with accompanying drawing, the signal blind detection method based on double Sigmoid nonlinear self-feedback chaotic neural network that the present invention proposes is described in detail:
[0058] The blind signal detection method based on double Sigmoid nonlinear self-feedback chaotic neural network, its implementation process is as follows:
[0059] When ignoring noise, the receiver equation for a discrete-time channel is defined as
[0060] x N =SΓ T (1)
[0061] In the formula, X N is the receiving data array, S is the sending signal array, Γ is the channel impulse response h jj Constituted block Toeplitz matrix; ( ) T Represents matrix transposition;
[0062] Among them, the sending signal array:
[0063] S=[s L+M (k),...,s L+M (k+N-1)] T =[s N (k),...,s N (k-M-L)] N×(L+M+1) ,
[0064] M is the channel order, L is the equalizer order, and N is the required data length;
[0065] the s L+M (k)=[s(k),...,s(k-L-M)] T ; Among t...
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