Superposition Noisy Network Coding

TL;DR

This paper introduces a superposition noisy network coding scheme that combines partial decode-forward and noisy network coding, achieving higher rates in relay and multicast networks.

Contribution

It proposes a novel hybrid coding scheme for networks, analyzing its performance and achievable rates for various relay and multicast configurations.

Findings

Achieves higher rates than existing noisy network coding schemes

Applicable to single relay, multicast, and two-way relay channels

Provides a unified coding scheme with improved performance

Abstract

We present a superposition coding scheme for communication over a network, which combines partial decode and forward and noisy network coding. This hybrid scheme is termed as superposition noisy network coding. The scheme is designed and analyzed for single relay channel, single source multicast network and multiple source multicast network. The achievable rate region is determined for each case. The special cases of Gaussian single relay channel and two way relay channel are analyzed for superposition noisy network coding. The achievable rate of the proposed scheme is higher than the existing schemes of noisy network coding and compress-forward.