Title :
Quasi-Newton constant modulus adaptive algorithm for use in multi-user communication systems
Author :
Luo, Y. ; Chambers, J.A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Bath Univ., UK
fDate :
2/15/2001 12:00:00 AM
Abstract :
A new quasi-Newton multi-user constant modulus algorithm (QN-MUCMA) for mitigation of intersymbol interference (ISI) and cochannel interference (CCI) in multi-user communications is introduced. Compared with the conventional constant modulus algorithm with decorrelation cost, the proposed algorithm achieves fast convergence by the exploitation of Hessian information within the weight update equation. Simulations support the improved convergence properties of the algorithm
Keywords :
Hessian matrices; adaptive equalisers; blind equalisers; cochannel interference; decorrelation; intersymbol interference; multiuser channels; Hessian information; cochannel interference; convergence properties; decorrelation cost; intersymbol interference; multi-user communication systems; quasi-Newton constant modulus adaptive algorithm; weight update equation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010169
