Comparative study on LMS and CMA channel equalization

Author

Makki, A.H.I. ; Dey, Anind K. ; Khan, Muhammad Asad

Author_Institution

Signal Process. Dept., Blekinge Inst. of Technol., Karlshamn, Sweden

fYear

2010

fDate

28-30 June 2010

Firstpage

487

Lastpage

489

Abstract

In wireless communication, the received signal is a distorted one from the transmitted signal due to some problems such as the Inter-Symbol Interference (ISI) and the noise. The ISI problem can be overcome using channel equalization which is an adaptive filter that approximately inverses the channel effect. This paper analyzes the performance of the Least Mean Square (LMS) algorithm equalizer and the Constant Modulus Algorithm (CMA) equalizer in terms of the convergence speed and the accuracy. And also determine the application field for these two equalizers. The Quadrature Phase Shift Keying (QPSK) is used as a modulation technique.

Keywords

adaptive filters; convergence; equalisers; intersymbol interference; least mean squares methods; quadrature phase shift keying; radio networks; CMA channel equalization; ISI problem; LMS; QPSK; adaptive filter; channel effect; constant modulus algorithm equalizer; convergence speed; intersymbol interference; least mean square algorithm equalizer; modulation technique; quadrature phase shift keying; wireless communication; Accuracy; Blind equalizers; Convergence; Cost function; Least squares approximation; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Society (i-Society), 2010 International Conference on

Conference_Location

London

Print_ISBN

978-1-4577-1823-6

Electronic_ISBN

978-0-9564263-3-8

Type

conf

Filename

6018762