Blind LPTV joint equalization and interference suppression

  • Authors:

  • G. Gelli;F. Verde

  • Affiliations:

  • Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Univ. degli Studi Federico II de Napoli, Italy;-

  • Venue:
  • ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 05
  • Year:
  • 2000

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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.