Distributed Interference Cancellation in Multiple Access Channel with Transmitter Cooperation

I-Hsiang Wang

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arXiv · 1009.4269

Distributed Interference Cancellation in Multiple Access Channel with Transmitter Cooperation

I-Hsiang Wang

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Abstract

We consider a two-user Gaussian multiple access channel with two independent additive white Gaussian interferences. Each interference is known to exactly one transmitter non-causally. Transmitters are allowed to cooperate through finite-capacity links. The capacity region is characterized to within 3 and 1.5 bits for the stronger user and the weaker user respectively, regardless of channel parameters. As a by-product, we characterize the capacity region of the case without cooperation to within 1 and 0.5 bits for the stronger user and the weaker user respectively. These results are based on a layered modulo-lattice transmission architecture which realizes distributed interference cancellation.

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I-Hsiang Wang. 2010-09-22. Distributed Interference Cancellation in Multiple Access Channel with Transmitter Cooperation. https://arxiv.org/abs/1009.4269

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