Opportunistic Two-Stage Feedback and Scheduling for MIMO Downlink Systems

@article{Min2013OpportunisticTF,
  title={Opportunistic Two-Stage Feedback and Scheduling for MIMO Downlink Systems},
  author={Moonsik Min and Dongsik Kim and Hyun-Myung Kim and Gi-Hong Im},
  journal={IEEE Transactions on Communications},
  year={2013},
  volume={61},
  pages={312-324}
}
We propose an opportunistic two-stage feedback and scheduling algorithm that is based upon zero-forcing beamforming with semi-orthogonal user selection (ZFBF-SUS) to reduce its feedback load. In an SUS algorithm, a base station schedules semi-orthogonal users using the feedback of all users' channel information. However, such feedback overhead significantly increases with the number of users. To reduce the feedback load of ZFBF-SUS systems, the proposed two-stage feedback scheme… CONTINUE READING

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