A Lattice-Reduction-Aided Soft Demapper for High-Rate Coded MIMO-OFDM Systems

@article{Qi2007ALS,
  title={A Lattice-Reduction-Aided Soft Demapper for High-Rate Coded MIMO-OFDM Systems},
  author={Xiao-Feng Qi and Keith Holt},
  journal={IEEE Signal Processing Letters},
  year={2007},
  volume={14},
  pages={305-308}
}
We extend the lattice-reduction (LR) method to MIMO detection for coded space division multiplexing OFDM systems with soft-input decoding. The scheme employs a novel combination of LR, K-best candidate generation, and simple candidate pruning. With a handful of candidates, the receiver is able to approach packet error rate performance of full maximum likelihood detector to within 1 dB, over varying data rates and channel correlations. It is appealing for high-rate coded-MIMO systems operating… CONTINUE READING
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