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.
PTV-CMA blind equalization and interference suppression / Gelli, Giacinto; Verde, Francesco. - (2000), pp. 985-989. (Intervento presentato al convegno 34th Asilomar Conference on Signals, Systems, and Computers. tenutosi a Pacific Grove (USA) nel Novembre) [10.1109/ACSSC.2000.910661].
PTV-CMA blind equalization and interference suppression
GELLI, GIACINTO;VERDE, FRANCESCO
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
