Property restoral approach to blind equalization of digital transmission channels

Author

Oh, Kil Nam ; Park, Jae Hong

Author_Institution

Radio Technol. Sect., Electron. & Telecommun. Res. Inst., Taejon, South Korea

Volume

43

Issue

3

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

544

Lastpage

549

Abstract

A new algorithm using the property restoral approach for adaptive blind equalization of digital transmission channels is proposed. According to residual intersymbol interference (ISI) levels at the equalizer output, the proposed algorithm adopts a single-level radius or a multi-level radius to form the error signal to be minimized. Thus, it is possible to reduce the steady-state error and improve the convergence speed of conventional property restoral algorithms. We examined the performance improvement obtained by the proposed algorithm over the constant modulus algorithm (CMA), dual-mode Godard algorithm (DMGA), and radius-directed equalization (RDE) algorithm for 16- and 32-QAM signals

Keywords

adaptive equalisers; digital communication; error analysis; intersymbol interference; minimisation; quadrature amplitude modulation; telecommunication channels; 16-QAM signals; 32-QAM signals; ISI; adaptive blind equalization; constant modulus algorithm; convergence speed; digital transmission channels; dual-mode Godard algorithm; error signal; multi-level radius; performance improvement; property restoral approach; radius-directed equalization algorithm; residual intersymbol interference; single-level radius; steady-state error; AWGN; Adaptive equalizers; Baseband; Blind equalizers; Convergence; Digital communication; Intersymbol interference; Quadrature amplitude modulation; Signal restoration; Steady-state;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.628675

Filename

628675