Title :
Performance comparison of second order based blind equalizers in data communication channels
Author :
Becchetti, Claudio ; Cocco, Annalisa ; Jacovitti, Giovanni
Author_Institution :
INFOCOM Dept., Rome Univ., Italy
Abstract :
A performance comparison of blind equalization methods based on second order statistics (SOS) in an operative context of fractional sampled two-ray communication channels is provided. The compared methods are the subspace (SS), cross-relation (CR) and the two-step maximum likelihood (TSML). These three SOS approaches estimate the impulse response of FIR channels driven by unknown input sequences using the time channel diversity, whenever it is available. Application limits as well as the effects of echo delay and roll-off of the shaping filter are discussed
Keywords :
FIR filters; adaptive equalisers; adaptive filters; adaptive signal processing; correlation methods; data communication; deconvolution; delays; diversity reception; echo; filtering theory; maximum likelihood estimation; multipath channels; statistical analysis; FIR channels; blind deconvolution; blind equalization methods; data communication channels; echo delay; fractional sampled two-ray communication channels; input sequences; multipath channels; performance comparison; second order based blind equalizers; second order statistics; shaping filter roll-off; subspace method; time channel diversity; two-step maximum likelihood method; Blind equalizers; Chromium; Communication channels; Context; Data communication; Delay effects; Finite impulse response filter; Maximum likelihood estimation; Pulse shaping methods; Statistics;
Conference_Titel :
Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on
Conference_Location :
Santorini
Print_ISBN :
0-7803-4137-6
DOI :
10.1109/ICDSP.1997.627997
