Compressive Feedback Based on Sparse Approximation for Multiuser MIMO Systems

@article{Song2010CompressiveFB,
  title={Compressive Feedback Based on Sparse Approximation for Multiuser MIMO Systems},
  author={Hyungjoon Song and Woohyun Seo and Daesik Hong},
  journal={IEEE Transactions on Vehicular Technology},
  year={2010},
  volume={59},
  pages={1017-1023}
}
In multiuser multiple-input-multiple-output (MU-MIMO) systems, limited feedback schemes using a vector quantization codebook (VQC) for partial channel state information (CSI) can enable a base station (BS) to enhance the sum throughput at low feedback rates. However, the VQC has a limited throughput gain, although it requires a great deal of memory and complexity as the feedback rate increases. Therefore, we propose a high-precision feedback technique by using sparse approximation and… CONTINUE READING
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