Null Space Learning With Interference Feedback for Spatial Division Multiple Access

@article{Noam2014NullSL,
  title={Null Space Learning With Interference Feedback for Spatial Division Multiple Access},
  author={Yair Noam and Alexandros Manolakos and Andrea J. Goldsmith},
  journal={IEEE Transactions on Wireless Communications},
  year={2014},
  volume={13},
  pages={5699-5715}
}
We propose a learning technique for MIMO communication systems to perform spatial division multiple access with minimal cooperation between users. In the proposed technique, each user (in a two-user receiver-transmitter pair) learns the null space of the interference channel to the other user by transmitting a learning signal and observing an affine function of the other user's interference plus noise power. The only requirement is that each system broadcasts, through a low-rate control channel… CONTINUE READING
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