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IEICE TRANSACTIONS on Fundamentals

Robust Multimodulus Blind Equalization Algorithm with an Optimal Step Size

Liu YANG, Hang ZHANG, Yang CAI, Hua YANG, Qiao SU

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Summary :

A class of multimodulus algorithms (MMA(p)) optimized by an optimal step-size (OS) for blind equalization are firstly investigated in this letter. The multimodulus (MM) criterion is essentially a split cost function that separately implements the real and imaginary part of the signal, hence the phase can be recovered jointly with equalization. More importantly, the step-size leading to the minimum of the MM criterion along the search direction can be obtained algebraically among the roots of a higher-order polynomial at each iteration, thus a robust optimal step-size multimodulus algorithm (OS-MMA(p)) is developed. Experimental results demonstrate improved performance of the proposed algorithm in mitigating the inter-symbol interference (ISI) compared with the OS constant modulus algorithm (OS-CMA). Besides, the computational complexity can be reduced by the proposed OS-MMA(2) algorithm.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E102-A No.3 pp.576-580
Publication Date
2019/03/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E102.A.576
Type of Manuscript
LETTER
Category
Digital Signal Processing

Authors

Liu YANG
  Army Engineering University of PLA
Hang ZHANG
  Army Engineering University of PLA
Yang CAI
  Space Engineering University of PLA
Hua YANG
  Army Engineering University of PLA
Qiao SU
  Army Engineering University of PLA

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