Capacity Bounds for the Gaussian Interference Channel with Transmitter Cooperation

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Executive Summary

The authors obtain a new outer bound on the capacity region of the two-user Interference Channel with Generalized Feedback (IC-GF). This outer bound is based on the idea of dependence balance which was proposed by Hekstra and Willems. They explicitly evaluate their outer bound for the Gaussian IC with User-Cooperation (IC-UC), where each transmitter receives an additive white Gaussian noise corrupted version of the channel input of the other transmitter. They show that for all non-zero values of cooperation noise variances, their outer bound strictly improves upon the cut-set outer bound.

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