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arXiv · 1701.02345

Sliding-Window Superposition Coding:Two-User Interference Channels

Lele Wang·Young-Han Kim·Chiao-Yi Chen·Hosung Park·Eren Sasoglu
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Abstract

A low-complexity coding scheme is developed to achieve the rate region of maximum likelihood decoding for interference channels. As in the classical rate-splitting multiple access scheme by Grant, Rimoldi, Urbanke, and Whiting, the proposed coding scheme uses superposition of multiple codewords with successive cancellation decoding, which can be implemented using standard point-to-point encoders and decoders. Unlike rate-splitting multiple access, which is not rate-optimal for multiple receivers, the proposed coding scheme transmits codewords over multiple blocks in a staggered manner and recovers them successively over sliding decoding windows, achieving the single-stream optimal rate region as well as the more general Han--Kobayashi inner bound for the two-user interference channel. The feasibility of this scheme in practice is verified by implementing it using commercial channel codes over the two-user Gaussian interference channel.

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Lele Wang, Young-Han Kim, Chiao-Yi Chen, Hosung Park, Eren Sasoglu. 2017-01-09. Sliding-Window Superposition Coding:Two-User Interference Channels. https://arxiv.org/abs/1701.02345

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