High fractionally spaced constant modulus blind equalization for high order-QAM signalling

Author

Zaouche, A. ; Dayoub, I. ; Rouvaen, J.M.

Author_Institution

Inst. d´´Electronique. de Microelectronique et de Nanotechnol., Univ. de Valenciennes-Le Mont Houy, Valenciennes

fYear

2005

fDate

17-20 July 2005

Firstpage

197

Lastpage

202

Abstract

Blind channel equalization has gained a wide-spread use in communications systems. This type of equalization doesn´t make use of any training sequence. The most commonly used blind adaptation algorithm is known as the constant modulus algorithm (CMA). The present paper presents the performances of fractionally spaced constant modulus equalization applied for 256-QAM and 1024-QAM modulated signals. Two ways of sampling the received data are investigated. The very known T/2FSE where the received signals are sampled at rate twice the baud rate and T/8FSE where the received signal is sampled at rates which are eight times the baud rate

Keywords

blind equalisers; quadrature amplitude modulation; signal sampling; spread spectrum communication; telecommunication signalling; 1024-QAM; 256-QAM signalling; CMA; FSE; baud rate; blind adaptation algorithm; blind channel equalization; constant modulus algorithm; fractionally spaced equalization; quadrature amplitude modulated signal; signal sampling; wide-spread communications system; Adaptive algorithm; Bandwidth; Blind equalizers; Convolution; Data communication; Degradation; Distortion; Finite impulse response filter; Quadrature amplitude modulation; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on

Conference_Location

Novosibirsk

Print_ISBN

0-7803-9403-8

Type

conf

DOI

10.1109/SSP.2005.1628590

Filename

1628590