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Adaptive MIMO decision feedback equalization for receivers with time-varying channels
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- Authors
- Jihoon Choi, Heejung Yu, Yong H. Lee
- Issue Date
- 2005-11
- Citation
- IEEE Transactions on Signal Processing, v.53, no.11, pp.4295-4303
- ISSN
- 1053-587X
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- 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. © 2005 IEEE.
- KSP Keywords
- Adaptive receiver, Adaptive technique, Analysis and simulation, Channel Tracking, Computational complexity, Least Square(LS), Recursive Least Squares(RLS), Space time(ST), Time-varying channels, Update algorithm, V-BLAST