Reduced feedback and random beamforming for OFDM MIMO broadcast channels

@article{Fakhereddin2009ReducedFA,
  title={Reduced feedback and random beamforming for OFDM MIMO broadcast channels},
  author={Maralle J. Fakhereddin and Masoud Sharif and Babak Hassibi},
  journal={IEEE Transactions on Communications},
  year={2009},
  volume={57}
}
It has been shown that random beamforming using partial channel state information (CSI) achieves the same throughput scaling as obtained from dirty paper coding for a broadcast (downlink) channel with M transmit antennas and K users where K is large. In this paper, we apply this scheme to wideband MIMO broadcast channels. By using OFDM, an L-tap wideband channel can be decomposed to N parallel narrowband channels (subcarriers), where N > L . Neighboring subcarriers are highly correlated… CONTINUE READING

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