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Diversity-Multiplexing Tradeoff Analysis of Coded Multi-User Relay Networks
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-5407-0835
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-7926-5081
2011 (English)In: IEEE Transactions on Communications, ISSN 0090-6778, E-ISSN 1558-0857, Vol. 59, no 7, 1995-2005 p.Article in journal (Refereed) Published
Abstract [en]

We study the impact of multiple access strategies on the diversity-multiplexing tradeoff (DMT) performance in wireless multi-user relay networks. The networks contain multiple independent sources, multiple half-duplex decode-and-forward (DF) relays, and one common destination. Instead of separately retransmitting each source message, the relays employ a class of spectrally efficient finite field network codes to assist the sources. It is shown that fully orthogonal or fully non-orthogonal transmission among sources/relays does not necessarily provide optimized DMT performance. We propose a novel transmission protocol that divides the sources and relays into individual clusters. The nodes within one cluster transmit non-orthogonally while the transmissions of different clusters span orthogonal channels. We provide the method to calculate the achievable DMT for each clustering strategy. The network DMT performance can thus be optimized by properly clustering the multiple sources and relays.

Place, publisher, year, edition, pages
2011. Vol. 59, no 7, 1995-2005 p.
Keyword [en]
Multi-user relay networks, multiple access, diversity-multiplexing tradeoff (DMT), maximum distance separable finite field network code (MDS-FFNC)
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-39032DOI: 10.1109/TCOMM.2011.050211.100527ISI: 000293659600027Scopus ID: 2-s2.0-79960563742OAI: oai:DiVA.org:kth-39032DiVA: diva2:439244
Funder
Swedish Research CouncilICT - The Next Generation
Available from: 2011-09-07 Created: 2011-09-07 Last updated: 2017-12-08Bibliographically approved

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Xiao, MingSkoglund, Mikael

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