The finite-length multi-input multi-output MMSE-DFE

  • Authors:
  • N. Al-Dhahir;A.H. Sayed

  • Affiliations:
  • AT&T Shannon Lab., Florham Park, NJ;-

  • Venue:
  • IEEE Transactions on Signal Processing
  • Year:
  • 2000

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Abstract

A new theoretical framework is introduced for analyzing the performance of a finite length minimum-mean-square error decision feedback equalizer (MMSE-DFE) in a multi-input multi-output (MIMO) environment. The framework includes transmit and receive diversity systems as special cases and quantifies the diversity performance improvement as a function of the number of transmit/receive antennas and equalizer taps. Fast and parallelizable algorithms for computing the finite-length MIMO MMSE-DFE are presented for three common multi-user detection scenarios