Title :
PTV-CMA blind equalization and interference suppression
Author :
Gelli, Giacinto ; Verde, Francesco
Author_Institution :
Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Naples Univ., Italy
fDate :
Oct. 29 2000-Nov. 1 2000
Abstract :
The problem of blindly equalizing a digital communication signal distorted by a linear time-invariant channel, and contaminated by severe co-channel or adjacent-channel digital interference, is considered in this paper. We propose here to adopt a two-stage periodically time-varying (PTV) equalizer; in the first stage, partial interference suppression is achieved by resorting to linear PTV filtering, which allows the second stage, based on a PTV version of the constant modulus algorithm (CMA), to reliably recover the transmitted information symbols. The effectiveness of the new approach is corroborated by the results of computer simulations.
Keywords :
adjacent channel interference; blind equalisers; cochannel interference; digital communication; interference suppression; time-varying filters; ACI; CCI; CMA; PTV-CMA blind equalization; adjacent-channel digital interference; co-channel digital interference; constant modulus algorithm; digital communication signal; interference suppression; linear PTV filtering; linear time-invariant channel; partial interference suppression; transmitted information symbols; two-stage periodically time-varying equalizer; Additive noise; Blind equalizers; Distortion; Information filtering; Information filters; Interference channels; Interference suppression; Intersymbol interference; Radiofrequency interference; Telecommunications;
Conference_Titel :
Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-6514-3
DOI :
10.1109/ACSSC.2000.910661