Nonlinear channel equalization by multi-kernel adaptive filter

You Nakajima, Masahiro Yukawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

In this paper, a novel adaptive channel-equalization scheme using multiple kernels is proposed. The proposed scheme equalizes distorted signals by means of a linear combination of multiple Gaussian functions having different means and variances. The combination coefficients are computed by the multi-kernel normalized least squares with block soft-thresholding (MKNLMS-BT) algorithm. To deal with channel nonstationarity, an efficient technique to control the block soft-thresholding operator itself adaptively is presented, based on the block ℓ p-norm (0 < p < 1). The proposed scheme enjoys low computational complexity and global optimality (unlike the Volterra filtering and neural network approaches) as well as high estimation accuracy. Simulation results show the efficacy of the proposed scheme both in stationary and nonstationary environments.

Original languageEnglish
Title of host publicationIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Pages384-388
Number of pages5
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE 13th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2012 - Cesme, Turkey
Duration: 2012 Jun 172012 Jun 20

Other

Other2012 IEEE 13th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2012
CountryTurkey
CityCesme
Period12/6/1712/6/20

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Keywords

  • adaptive equalization
  • kernel adaptive filter
  • nonlinear channel
  • soft-thresholding operator

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

Cite this

Nakajima, Y., & Yukawa, M. (2012). Nonlinear channel equalization by multi-kernel adaptive filter. In IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC (pp. 384-388). [6292933] https://doi.org/10.1109/SPAWC.2012.6292933