Differential Feedback in Codebook-Based Multiuser MIMO Systems in Slowly Varying Channels

@article{Kim2012DifferentialFI,
  title={Differential Feedback in Codebook-Based Multiuser MIMO Systems in Slowly Varying Channels},
  author={Kyeongyeon Kim and Taejoon Kim and David James Love and Il Han Kim},
  journal={IEEE Transactions on Communications},
  year={2012},
  volume={60},
  pages={578-588}
}
In downlink multiuser multiple-input multiple-output (MIMO) systems, system performance highly depends on the reliability of downlink channel state information (CSI) at the base station (BS). In frequency division duplexing, the most practical solution is to have downlink CSI from the users fed back to the BS. Most work on this feedback design has assumed independent block fading channels. However, this paper proposes a new differential feedback scheme using the observation that the channel… CONTINUE READING
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