Achievable rates for network coding on the exchange channel

Yonggang Hao, Dennis Goeckel, Zhiguo Ding, Don Towsley, Kin K. Leung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

26 Scopus citations


Network coding, where relay nodes combine the information received from multiple links rather than simply replicating and forwarding the received packets, has shown the promise of significantly improving system performance. In very recent works, multiple researchers have presented methods for increasing system throughput by employing network coding inspired methods to mix packets at the physical layer: physical-layer network coding (PNC). A common example used to validate much of this work is that of two sources exchanging information through a single intervening relay - a situation that we denote the "exchange channel". In this paper, achievable rates of various schemes on the exchange channel are considered. Achievable rates for traditional multi-hop routing approaches, network coding approaches, and various PNC approaches are considered. A new method of PNC inspired by Tomlinson-Harashima precoding (THP), where a modulo operation is used to control the power at the relay, is introduced, and shown to have a slight advantage over analogous schemes at high signal-to-noise ratios (SNRs).

Original languageBritish English
Title of host publicationMilitary Communications Conference, MILCOM 2007
StatePublished - 2007
EventMilitary Communications Conference, MILCOM 2007 - Orlando, FL, United States
Duration: 29 Oct 200731 Oct 2007

Publication series

NameProceedings - IEEE Military Communications Conference MILCOM


ConferenceMilitary Communications Conference, MILCOM 2007
Country/TerritoryUnited States
CityOrlando, FL


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