Sum capacity of the Gaussian interference channel in the low interference regime

@article{Annapureddy2008SumCO,
  title={Sum capacity of the Gaussian interference channel in the low interference regime},
  author={V. Annapureddy and V. Veeravalli},
  journal={2008 Information Theory and Applications Workshop},
  year={2008},
  pages={422-427}
}
New upper bounds on the sum capacity of the two-user Gaussian interference channel are derived. Using these bounds, it is shown that treating interference as noise achieves the sum capacity if the interference levels are below certain thresholds. 
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