Soft Constraint Satisfaction Multimodulus Blind Equalization Algorithms

Author

Abrar, Shafayat ; Zerguine, Azzedine ; Deriche, Mohamed

Author_Institution

Electr. Eng. Dept., COMSATS Inst. of Inf. Technol., Islamabad, Pakistan

Volume

12

Issue

9

fYear

2005

Firstpage

637

Lastpage

640

Abstract

In this letter, a new multimodulus algorithm for blind equalization of complex communication channels is derived by solving a constrained optimization problem with relaxation. The intersymbol interference (ISI) optimization and phase-recovery capabilities of the proposed algorithm are analyzed. It is shown from computer simulations that superior performance for the derived algorithm over Lin´s algorithm is obtained.

Keywords

adaptive equalisers; adaptive signal processing; blind equalisers; intersymbol interference; optimisation; quadrature amplitude modulation; ISI; QAM signal; adaptive equalizers; blind equalization; complex communication channels; constrained optimization problem; intersymbol interference; multimodulus algorithm; phase-recovery; reduced constellation algorithm; soft-constraint satisfaction; Algorithm design and analysis; Blind equalizers; Communication channels; Computer simulation; Constellation diagram; Constraint optimization; Differential equations; Interference constraints; Intersymbol interference; Signal processing algorithms; Adaptive equalizers; blind equalization; multimodulus algorithm; reduced constellation algorithm; soft-constraint satisfaction;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2005.853042

Filename

1495431