Diversity Combining and Equalization with TCM for Wireless Communications

  • Authors:

  • Yue Chen;K. B. Letaief;Justin C.-I. Chuang

  • Affiliations:

  • Mobilink Telecom, Inc., 2710 Walsh Avenue, No. 200, Santa Clara, CA 95051, U.S.A.;Electrical and Electronic Engineering Department, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P.R. China/ E-mail: eekhaled@ee.ust.hk;AT&T Labs -- Research, Holmdel, NJ 07733-0400, U.S.A.

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2002

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Abstract

This paper presents an equalization structure in which antennadiversity, adaptive decision feedback equalization (DFE), interleavingand trellis-coded modulation (TCM) can be effectively combined to combatboth ISI and cochannel interference in cellular mobile radioenvironments. The feedback filter of the DFE can use either tentative orfinal decision symbols of the TCM Viterbi decoding to cancel tail ISIwith the square root Kalman algorithm. A performance bound on theaverage pairwise error probability for TCM under perfect interleavingand equalization is obtained by analysis. Some simulation results whichillustrate the potential of the proposed system will also be given. Inparticular, a performance comparison between the proposed method anduncoded QPSK modulation will be undertaken.