Open Access

A Dynamic Tap Allocation for Concurrent CMA-DD Equalizers

  • Diego von B. M. Trindade1,
  • Vitor Halmenschlager1,
  • Leonardo Ortolan1,
  • Maria C. F. De Castro1,
  • Fernando C. C. De Castro1 and
  • Fabrício Ourique1Email author
EURASIP Journal on Advances in Signal Processing20102010:278686

https://doi.org/10.1155/2010/278686

Received: 10 August 2010

Accepted: 20 October 2010

Published: 27 October 2010

Abstract

This paper proposes a dynamic tap allocation for the concurrent CMA-DD equalizer as a low complexity solution for the blind channel deconvolution problem. The number of taps is a crucial factor which affects the performance and the complexity of most adaptive equalizers. Generally an equalizer requires a large number of taps in order to cope with long delays in the channel multipath profile. Simulations show that the proposed new blind equalizer is able to solve the blind channel deconvolution problem with a specified and reduced number of active taps. As a result, it minimizes the output excess mean square error due to inactive taps during and after the equalizer convergence and the hardware complexity as well.

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

(1)
Centro de Pesquisa em Tecnologias Wireless (CPTW), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)

Copyright

© Diego von B. M. Trindade et al. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.