Distributed Interference Cancellation in Multiple Access Channels

Abstract

In this paper, we consider a Gaussian multiple access channel with multiple independent additive white Gaussian interferences. Each interference is known to exactly one transmitter non-causally. The capacity region is characterized to within a constant gap regardless of channel parameters. These results are based on a layered modulo-lattice scheme which realizes distributed interference cancellation.

Submitted to IEEE Transactions on Information Theory. Corrected typos in the current version