Adaptive MIMO decision feedback equalization for receivers with time-varying channels

  • Authors:
  • Jihoon Choi;Heejung Yu;Y.H. Lee

  • Affiliations:
  • Media Lab., Suwon-City, South Korea;-;-

  • Venue:
  • IEEE Transactions on Signal Processing
  • Year:
  • 2005

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Abstract

In an attempt to reduce the computational complexity of vertical Bell Labs layered space time (V-BLAST) processing with time-varying channels, an efficient adaptive receiver is developed based on the generalized decision feedback equalizer (GDFE) architecture. The proposed receiver updates the filter weight vectors and detection order using a recursive least squares (RLS)-based time- and order-update algorithm. The convergence of the algorithm is examined by analysis and simulation, and it is shown that the proposed adaptive technique is considerably simpler to implement than a V-BLAST processor with channel tracking, yet the performances are almost comparable.