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MIMO Gaussian Bidirectional Broadcast Channels with Common Messages
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-0036-9049
2011 (English)In: IEEE Transactions on Wireless Communications, ISSN 1536-1276, E-ISSN 1558-2248, Vol. 10, no 9, 2950-2959 p.Article in journal (Refereed) Published
Abstract [en]

In this work, the MIMO Gaussian bidirectional broadcast channel (BBC) with common messages is studied. The problem is motivated by the concept of bidirectional relaying in a three-node network, where a half-duplex relay node establishes a bidirectional communication between two other nodes using a decode-and-forward protocol and thereby adds an own multicast message to the communication. The capacity region of the broadcast phase is derived and the corresponding transmit covariance matrix optimization problem is analyzed in detail. Thereby, it is shown that the transmit covariance optimization problem is strongly connected to the corresponding one of the MIMO Gaussian BBC without common messages. In particular, this knowledge can be exploited to transfer results such as optimal transmit strategies from one scenario to the other one.

Place, publisher, year, edition, pages
2011. Vol. 10, no 9, 2950-2959 p.
Keyword [en]
Bidirectional relaying, MIMO, capacity region, optimization, wireless network
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-51295DOI: 10.1109/TWC.2011.071411.101456ISI: 000297246300020Scopus ID: 2-s2.0-80052932187OAI: oai:DiVA.org:kth-51295DiVA: diva2:463860
Funder
Swedish Research CouncilICT - The Next Generation
Note
QC 20111212Available from: 2011-12-12 Created: 2011-12-12 Last updated: 2017-12-08Bibliographically approved

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Oechtering, Tobias J.

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