Linear superposition coding for the Gaussian MAC with quantized feedback

@article{Farthofer2015LinearSC,
  title={Linear superposition coding for the Gaussian MAC with quantized feedback},
  author={Stefan Farthofer and Gerald Matz},
  journal={2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton)},
  year={2015},
  pages={1374-1379}
}
We propose a linear transceiver scheme for the symmetric two-user multiple access channel with additive white Gaussian noise and quantized feedback. The quantized feedback link is modeled as an information bottleneck subject to a rate constraint. We introduce a superposition scheme that splits the transmit power of each user between an Ozarow-like code (designed for perfect rate-limited feedback) and a conventional code that ignores the feedback. We study the achievable sum rate as a function… CONTINUE READING

Citations

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