Title :
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
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;
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
