Gaussian Interference Channel Capacity to Within One Bit

@article{Etkin2008GaussianIC,
  title={Gaussian Interference Channel Capacity to Within One Bit},
  author={Ra{\'u}l H. Etkin and David Tse and Hua Wang},
  journal={IEEE Transactions on Information Theory},
  year={2008},
  volume={54},
  pages={5534-5562}
}
The capacity of the two-user Gaussian interference channel has been open for 30 years. The understanding on this problem has been limited. The best known achievable region is due to Han and Kobayashi but its characterization is very complicated. It is also not known how tight the existing outer bounds are. In this work, we show that the existing outer bounds can in fact be arbitrarily loose in some parameter ranges, and by deriving new outer bounds, we show that a very simple and explicit Han… CONTINUE READING
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