Sum-Rate Upper Bounds for the Gaussian X Channel with Limited Receiver Cooperation

Main Article Content

Surapol Tan-a-ram
Watit Benjapolkul

Abstract

In this paper, we propose sum-rate upper bounds in terms of the sum of 3 rates and the sum of 4 rates for the two-user Gaussian X channel with limited receiver cooperation. These upper bounds are derived by using the Fano's inequality, the data processing inequality and genie-aided techniques. Then, we explore the generalized degrees of freedom (GDoF) of the proposed upper bounds with a symmetric channel setting. By setting a certain set of parameters, the received results show that our results are identical to the existing results for both non-cooperation and limited receiver cooperation cases. Moreover, we obtain that the GDoF computed from our proposed
upper bounds are greater than the GDoF of those in the non-cooperation case.

Article Details

How to Cite
Tan-a-ram, S., & Benjapolkul, W. (2017). Sum-Rate Upper Bounds for the Gaussian X Channel with Limited Receiver Cooperation. ECTI Transactions on Electrical Engineering, Electronics, and Communications, 15(2), 26–35. https://doi.org/10.37936/ecti-eec.2017152.171314
Section
Communication Systems

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