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Capacity bounds for the Gaussian interference channel with transmitter cooperation

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2 Author(s)
Tandon, R. ; Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA ; Ulukus, Sennur

We 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. We explicitly evaluate our 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. We show that for all non-zero values of cooperation noise variances, our outer bound strictly improves upon the cut-set outer bound.

Published in:

Networking and Information Theory, 2009. ITW 2009. IEEE Information Theory Workshop on

Date of Conference:

12-10 June 2009