Piggybacking Codes for Network Coding: The High/Low SNR Regime

TL;DR

This paper introduces a piggybacking scheme for network coding that optimally exploits high and low SNR regimes in multihop AF networks, achieving the cut-set upper bound.

Contribution

It presents a novel piggybacking scheme that is both necessary and sufficient for optimal performance in high/low SNR regimes, a new operational regime for multihop AF networks.

Findings

Achieves the cut-set upper bound at high/low SNR regimes

Introduces a piggybacking scheme for network coding

Defines a new asymptotically optimal operational regime

Abstract

We propose a piggybacking scheme for network coding where strong source inputs piggyback the weaker ones, a scheme necessary and sufficient to achieve the cut-set upper bound at high/low-snr regime, a new asymptotically optimal operational regime for the multihop Amplify and Forward (AF) networks.