Throughput and diversity gain of buffer-aided relaying

Nikola Zlatanov, Robert Schober, Petar Popovski

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

66 Citations (Scopus)


In this paper, we consider a simple network consisting of a source, a half-duplex decode-and- forward relay, and a destination. In contrast to most of the existing literature, we assume that the relay is equipped with a buffer and show that this can lead to substantial performance gains. We propose a simple protocol which chooses either the source-relay or the relay-destination link for transmission depending on the instantaneous channel state information. For this simple protocol, we derive the throughput for adaptive rate transmission and the outage probability for fixed rate transmission. Our results show that, unlike conventional relaying, buffer-aided relaying yields a diversity gain of two. In addition, throughput gains of up to 100 % compared to conventional relaying are possible.

Original languageEnglish
Title of host publication2011 IEEE Global Telecommunications Conference - GLOBECOM 2011
Subtitle of host publicationHouston, Texas, USA, 5 – 9 December 2011
EditorsXi Zhang
Place of PublicationPiscataway, NJ
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages6
ISBN (Electronic)9781424492688
Publication statusPublished - 2011
Externally publishedYes
EventIEEE Global Telecommunications Conference 2011 - Houston, United States of America
Duration: 5 Dec 20119 Dec 2011 (Proceedings)


ConferenceIEEE Global Telecommunications Conference 2011
Abbreviated titleIEEE GLOBECOM 2011
Country/TerritoryUnited States of America
Internet address

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