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On the Degrees of Freedom of Parallel Relay Networks
KTH, School of Electrical Engineering (EES), Communication Theory.
KTH, School of Electrical Engineering (EES), Communication Theory.
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0002-7926-5081
2010 (English)In: 2010 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE GLOBECOM 2010, 2010Conference paper (Refereed)
Abstract [en]

We study the degrees of freedom (DOF) of a single-antenna M-user time-varying parallel relay network, where the communications between M pairs of unconnected sources and destinations are provided by a large number of half-duplex decode-and-forward (DF) relays. Unlike the conventional relaying strategy which demands all the relays to simultaneously assist the sources, we divide the relays into two clusters and permit them to take turns forwarding the source messages. With appropriate interference alignment design, it is proved that the M-user time-varying relay network has M DOF, provided that the number of relays is infinitely large.

Place, publisher, year, edition, pages
, IEEE Global Telecommunications Conference (Globecom), ISSN 1930-529X
Keyword [en]
Decode-and-forward, Degrees of freedom, Half-duplex, Interference alignment, Parallel relays, Relay network, Relaying strategy, Sources and destinations, Time varying, Mechanics, Mobile telecommunication systems, Relay control systems, Telecommunication, Time varying systems
National Category
URN: urn:nbn:se:kth:diva-32020DOI: 10.1109/GLOCOM.2010.5683597ISI: 000287977402136ScopusID: 2-s2.0-79551644411ISBN: 978-1-4244-5638-3OAI: diva2:408956
IEEE Global Telecommunications Conference (GLOBECOM 2010), Miami, FL, DEC 06-10, 2010
QC 20110406Available from: 2011-04-06 Created: 2011-04-04 Last updated: 2011-04-06Bibliographically approved

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Wang, ChaoFarhadi, HamedSkoglund, Mikael
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