Blind ISI correction by using CMA

Author

Pérez, Jorge Omar ; Ferrao, Hilda Noemí ; Sayago, Claudia F. ; Novotny, Wenceslao

Author_Institution

Lab. de Procesamiento Digital de Informacion, Univ. Nac. de Tucuman, Tucuman, Argentina

fYear

2009

fDate

2-5 Aug. 2009

Firstpage

611

Lastpage

614

Abstract

In this work, a method of ISI correction by using the constant modulus algorithm, CMA, is presented. It consists of the introduction of an adjusting variable coefficient to improve the usually low speed of convergence of the classic CMA. An analytical justification is derived. The whole system has been computationally instrumented and extensively tested on a model of a dispersive-time varying-digital communication channel AWGN, with modulation QPSK for efficient ISI reduction. The experimental results are in accordance with the expected analytical estimations.

Keywords

AWGN channels; blind equalisers; digital communication; dispersive channels; intersymbol interference; quadrature phase shift keying; time-varying channels; CMA; blind ISI correction; blind equalizer model; constant modulus algorithm; digital communication channel AWGN; dispersive-time varying channel; modulation QPSK; variable coefficient adjustment; AWGN; Adaptive filters; Blind equalizers; Convergence; Instruments; Intersymbol interference; Laboratories; Least squares approximation; Signal processing; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2009. MWSCAS '09. 52nd IEEE International Midwest Symposium on

Conference_Location

Cancun

ISSN

1548-3746

Print_ISBN

978-1-4244-4479-3

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2009.5236018

Filename

5236018