A Family of Reduced-Constellation Algorithms for Blind Equalization of Square-QAM Signals

Author

Abrar, Shafayat

Author_Institution

Electrical Engineering Department, COMSATS Institute of Information Technology (CIIT), H-8/1, Islamabad 44000, Pakistan. Email: shafayat@ieee.org

fYear

2005

fDate

13-15 Dec. 2005

Firstpage

296

Lastpage

300

Abstract

A new class of blind adaptive channel equalization technique is presented which is based on reduced-constellation criterion. Under this criterion, the two-dimensional signal space is replaced with four-point constellation to compute blind estimate of the transmitted signal. The proposed algorithm is shown as a better alternative to an existing family of reduced-constellation (or multimodulus) algorithms. The proposed generalized reduced-constellation algorithm (GRCA) is shown to possess good interference cancellation capabilities.

Keywords

Adaptive equalizers; blind equalization; constant modulus algorithm (CMA); multimodulus algorithm (MMA); quadrature amplitude modulation (QAM); reduced-constellation algorithm (RCA); Adaptive equalizers; Blind equalizers; Constellation diagram; Cost function; Delay estimation; Finite impulse response filter; Information technology; Minimization methods; Quadrature amplitude modulation; Space technology; Adaptive equalizers; blind equalization; constant modulus algorithm (CMA); multimodulus algorithm (MMA); quadrature amplitude modulation (QAM); reduced-constellation algorithm (RCA);

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics, 2005. ICM 2005. The 17th International Conference on

Print_ISBN

0-7803-9262-0

Type

conf

DOI

10.1109/ICM.2005.1590088

Filename

1590088