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A novel feed-forward neural network blind equalization algorithm

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5 Author(s)
Yanqin Li ; Coll. of Disaster Prevention Equip. Inf. Eng., Inst. of Disaster Prevention Sci. & Technol., Sanhe, China ; Chunsheng Guo ; Zhen Zhang ; Linlin Chu
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In QAM communication system, CMA only was utilized to module statistical property of signals, and not to contain the phase information. In the phase deviation channel, great phase error was brought out. Simultaneously, it affected the convergence rate. A restraint function utilizing the amplitude of the signal was constructed in this article. The function must approach zero when the amplitude was chosen. The cost function was converted into a restraint function. The restraint stem includes the information of module property and phase characteristic. A new neural network blind equalization based on construction function was realize. Computer simulation indicates that the algorithm overcomes QAM signal phase deviation, speeds up the convergence rate, and reduces bit error ratio.

Published in:

Intelligent Control and Information Processing (ICICIP), 2010 International Conference on

Date of Conference:

13-15 Aug. 2010