Title :
Blind LPTV joint equalization and interference suppression
Author :
Gelli, Giacinto ; Verde, Francesco
Author_Institution :
Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Univ. degli Studi Federico II de Napoli, Italy
Abstract :
The problem of jointly equalizing a digital communication signal distorted by a linear time-invariant channel and rejecting co-channel or adjacent-channel digital interference is tackled. Owing to the presence of the interfering signal, the proposed optimum linear MMSE equalizer turns out to be periodically time-varying (LPTV). Moreover, new simple and effective blind channel identification procedures are presented, which can be applied as long as the desired and interfering signal exhibit different circularity and/or cyclo-stationarity properties. Simulation results confirm the effectiveness of the proposed techniques
Keywords :
adjacent channel interference; blind equalisers; cochannel interference; digital communication; identification; interference suppression; least mean squares methods; time-varying filters; LPTV filtering; adjacent-channel digital interference; blind LPTV joint equalization; blind channel identification; circularity properties; co-channel digital interference; cyclo-stationarity properties; digital communication signal; interference suppression; interfering signal; linear time-invariant channel; optimum linear MMSE equalizer; simulation results; Blind equalizers; Crosstalk; Digital communication; Digital filters; Information filtering; Interference suppression; Intersymbol interference; Nonlinear filters; Radiofrequency interference; Signal processing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
0-7803-6293-4
DOI :
10.1109/ICASSP.2000.861068
