A New Noncoherent Decoder for Wireless Network Coding

TL;DR

This paper introduces a novel noncoherent decoding method for wireless network coding in two-way relay channels, addressing issues with existing decoders when using MSK modulation and improving decoding performance amidst interference.

Contribution

It proposes a new noncoherent decoder tailored for MSK modulation in wireless network coding, enhancing decoding accuracy in interference scenarios.

Findings

The new decoder effectively handles interference in two-way relay channels.

It improves decoding performance over previous methods with MSK modulation.

The approach offers a robust solution for noncoherent wireless network coding.

Abstract

This work deals with the decoding aspect of wireless network coding in the canonical two-way relay channel where two senders exchange messages via a common relay and they receive the mixture of two messages. One of the recent works on wireless network coding was well explained by Katti \textit{et al.} in SIGCOMM'07. In this work, we analyze the issue with one of their decoders when minimum-shift keying (MSK) is employed as the modulation format, and propose a new noncoherent decoder in the presence of two interfering signals.