Title :
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
fDate :
8/1/1997 12:00:00 AM
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;
Journal_Title :
Consumer Electronics, IEEE Transactions on
