Bidirectional blind equalization based on the constant modulus and subspace-based algorithms

Junyi Xi, Shefeng Yan, Lijun Xu, Jing Tian

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

A bidirectional blind equalization based on the constant modulus algorithm (CMA) and subspace-based algorithm (SBA) is proposed in this paper. Without any training sequence or channel estimation, blind equalization improves the transmission efficiency significantly in underwater acoustic communications. The combining scheme in which two outputs run in opposite directions exploits the diversity and suppresses the error propagation. Moreover, a single-input multiple-output (SIMO) system is adopted in the algorithm to obtain the multiple receivers diversity gain and achieves a much better performance. The simulation results demonstrate that the proposed bidirectional CMA shows much better performance in a high SNR than that in a low SNR, and the bidirectional SBA outperforms the conventional method by approximately 2dB in BPSK system and 2.5dB in QPSK system.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479989188
DOIs
Publication statusPublished - 25 Nov 2015
Externally publishedYes
Event5th IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2015 - Ningbo, Zhejiang, China
Duration: 19 Sept 201522 Sept 2015

Publication series

Name2015 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2015

Conference

Conference5th IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2015
Country/TerritoryChina
CityNingbo, Zhejiang
Period19/09/1522/09/15

Keywords

  • Bidirectional operation
  • blind equalization
  • constant modulus algorithm (CMA)
  • single-input multiple-output (SIMO)
  • subspace-based algorithm (SBA)

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