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Fixed-rate Transmission over Fading Interference Channels Using Point-to-Point Gaussian Codes
Chalmers University of Technology.ORCID iD: 0000-0001-9853-2977
KTH, School of Electrical Engineering (EES). Tongji University.
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. (Communication Theory Laboratory)ORCID iD: 0000-0002-7926-5081
2015 (English)In: IEEE Transactions on Communications, ISSN 0090-6778, E-ISSN 1558-0857, Vol. 63, no 10, 3633-3644 p.Article in journal, Editorial material (Refereed) Published
Abstract [en]

This paper investigates transmission schemes for fixed-rate communications over a Rayleigh block-fading interference channel. There are two source-destination pairs where each source, in the presence of a short-term power constraint, intends to communicate with its dedicated destination at a fixed data rate. It encodes its messages using a point-to-point Gaussian codebook. The two users' transmissions can be conducted orthogonally or non-orthogonally. In the latter case, each destination performs either direct decoding by treating the interference as noise, or successive interference cancellation (SIC) to recover its desired message. For each scheme, we seek solutions of a power control problem to efficiently assign power to the sources such that the codewords can be successfully decoded at destinations. However, because of the random nature of fading, the power control problem for some channel realizations may not have any feasible solution and the transmission will be in outage. Thus, for each transmission scheme, we first compute a lower bound and an upper bound on the outage probability. Next, we use these results to find an outer bound and an inner bound on the epsilon-outage achievable rate region, i.e., the rate region in which the outage probability is below a certain value epsilon

Place, publisher, year, edition, pages
IEEE Press, 2015. Vol. 63, no 10, 3633-3644 p.
Keyword [en]
Interference channel, power control, point to point codes, successive interferes cancelation, block fading
National Category
URN: urn:nbn:se:kth:diva-124883DOI: 10.1109/TCOMM.2015.2471301ISI: 000363257200015ScopusID: 2-s2.0-84958191634OAI: diva2:638685
Swedish Foundation for Strategic Research

QC 20151216

Available from: 2013-08-01 Created: 2013-08-01 Last updated: 2016-02-09Bibliographically approved

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Farhadi, HamedSkoglund, Mikael
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