Journal on Communications ›› 2020, Vol. 41 ›› Issue (3): 145-153.doi: 10.11959/j.issn.1000-436x.2020031

• Papers • Previous Articles     Next Articles

Online blind equalization algorithm with echo state network based on prediction principle

Ling YANG,Qin HAN,Li CHENG,Aonan ZHAO,Juan DU   

  1. Institute of Information Science and Engineering,Lanzhou University,Lanzhou 730000,China
  • Revised:2019-12-20 Online:2020-03-25 Published:2020-03-31
  • Supported by:
    The Natural Science Foundation of Gansu Province(20180322);The Fundamental Research Funds for the Central Universities(lzujbky-2019-91)

Abstract:

In view of the nonlinear channel,the online blind equalization algorithm with echo state network was proposed based on prediction principle.In the proposed algorithm,the traditional linear prediction error filter was replaced by the ESN with good nonlinear mapping ability,and recursive least square (RLS) algorithm was used to calculate the output weight of the network to minimize the network prediction error.Then,the amplitude and phase were adjusted.Simulation results show that the proposed algorithm can effectively reduce the distortion caused by nonlinear channel to the transmitted signal for 16QAM signal,which has lower mean square error and faster convergence speed in comparison with other blind equalization algorithms based on prediction principle.

Key words: nonlinear channel, predictive error filter, echo state network, recursive least square algorithm

CLC Number: 

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