Title :
A Proposal for Blind Fir Equalization of Time-Varying Channels
Author :
Junqueira, Cynthia ; de França, Fabrício O. ; Attux, Romis R F ; Suyama, Ricardo ; de Castro, Leandro N. ; Von Zuben, Fernando J. ; Romano, João Marcos T
Author_Institution :
Inst. of Aeronaut. & Space, Rio de Janeiro
Abstract :
The multimodal and time-varying aspects of blind equalization problems in communication systems are treated here by means of an immune-inspired strategy capable of estimating the coefficients of the FIR equalization filter in an unsupervised manner. The associated optimization problem is solved by means of a population-based search technique characterized by a dynamic control of the population size and diversity maintenance. Static and time-varying channels have been proposed in simulated scenarios, aiming at indicating the tracking capability derived from the adaptive adjustment of the coefficients of the blind equalizer
Keywords :
FIR filters; blind equalisers; channel estimation; optimisation; search problems; time-varying channels; FIR equalization filter; blind FIR equalization; communication systems; diversity maintenance; immune-inspired strategy; multimodal blind equalization; optimization; population size dynamic control; population-based search technique; static channels; time-varying channels; Aerodynamics; Blind equalizers; Communication system control; Computer science; Finite impulse response filter; High performance computing; Proposals; Size control; Time varying systems; Time-varying channels;
Conference_Titel :
Machine Learning for Signal Processing, 2005 IEEE Workshop on
Conference_Location :
Mystic, CT
Print_ISBN :
0-7803-9517-4
DOI :
10.1109/MLSP.2005.1532866
