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Hybrid Decode-Amplify-Forward Cooperative Communications with Multiple Relays
Responsible organisation
2009 (English)Conference paper, Published paper (Refereed) Published
Abstract [en]

In this paper, we investigate the performance gain of hybrid decode-amplify-forward (HDAF) relay protocol over the two conventional ones: the adaptive decode-forward (ADF) and amplify-forward (AF) in dual-hop multiple-relay networks. We analyze the performance gain in terms of the symbol error probability (SEP) in the high signal-to-noise ratio (SNR) regime. Similarly as in the single relay case [1], under a specific modulation scheme, these gains only depend on the ratio of channel mean power between the first-hop and second-hop transmission. In particular, we show that the HDAF protocol obtains a large gain, medium gain, and small gain over ADF, AF as the relays are placed close to the destination, half-way between the source and destination (symmetric case), and nearby the source, respectively. In contrast to the single-relay case in which the HDAF scheme has no benefit compared to ADF and AF as the relay is located close to the source [1], HDAF still achieves a small gain with multiple relays. Interestingly, we further show that for all cases the performance gains are saturated as the number of relays is large.

Place, publisher, year, edition, pages
Budapest: IEEE , 2009.
Keyword [en]
WIRELESS NETWORKS, DIVERSITY, PERFORMANCE, PROTOCOLS, CHANNELS
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-7910ISI: 000272057700050Local ID: oai:bth.se:forskinfo3C5C1EF90FE092FEC12576AC003AC925ISBN: 978-1-4244-2947-9 (print)OAI: oai:DiVA.org:bth-7910DiVA: diva2:835583
Conference
IEEE Wireless Communications and Networking Conference
Available from: 2012-09-18 Created: 2010-01-15 Last updated: 2015-06-30Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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