Journal of Systems Engineering and Electronics ›› 2012, Vol. 34 ›› Issue (3): 451-456.doi: 10.3969/j.issn.1001-506X.2012.03.04

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Convex combination of adaptive filters for variable width and variable fractional tap-length LMS algorithm

RUI Guo-sheng1, MIAO Jun2, ZHANG Yang2, WANG Lin2   

  1. 1. Department of Electronic Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China;
    2. Graduate Students’ Brigade, Naval Aeronautical and Astronautical University, Yantai 264001, China
  • Online:2012-03-22 Published:2010-01-03

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Abstract:

To further improve the steady-state performance of the convex combination of adaptive filter for variable fractional tap-length least mean square (CFTLMS) algorithms, a convex combination of variable width (VW) and variable tap-length adaptive filtering algorithm is proposed based on the proof of the steady-state performance of CFTLMS algorithm, and the choice principles of parameters are given. Simulation results show the correctness of steady-state performance analysis and parameter selection principles of the VW-CFTLMS algorithm under lower SNR condition, and the steady-state performance of the algorithm is superior to that of the CFTLMS algorithm, of which the excess mean square error is lowered by about 1.8 dB.

CLC Number: 

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