Fractionally-spaced multi-modulus algorithm based on DNA genetic bat algorithm
A multi-mode blind equalization and fractional interval technology, which is applied in DNA computers, genetic models, baseband systems, etc., and can solve problems such as low convergence speed and steady-state error.
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[0062] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0063] The application of the DNA genetic bat approach to the Fractional Interval Multimodal Blind Equilibrium method is further detailed as follows:
[0064] The input signal of the equalizer is used as the input of the DNA genetic bat method, and the cost function of MMA is properly transformed as the fitness function of the DNA genetic bat method, and the optimal ability of the DNA genetic bat method is used to find the best equalizer. weight vector. The principle block diagram of fractional interval multi-mode blind equalization method is as follows: figure 1 shown.
[0065] In the figure a(k) is the transmission signal sequence, c m (k) is the mth sub-channel, n m (k) is the additive Gaussian white noise of the m branch, y mR (k) and y mI (k) are respectively multimode module m input signal y m The real and imaginary parts of (k), w mR...
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