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Outage probability analysis for superposition coded symmetric relaying
ST Ericsson, Sweden .
Beijing Institute Technology, Peoples R China .
Beijing Institute Technology, Peoples R China .
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-7599-4367
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2013 (English)In: SCIENCE CHINA-INFORMATION SCIENCES, ISSN 1674-733X, Vol. 56, no 2Article in journal (Refereed) Published
Abstract [en]

Superposition coded symmetric relaying is a bandwidth-efficient cooperative scheme where each source node simultaneously transmits both its own "local" packet and "relay" packet that originated at its partner by adding the modulated local and relay signals in Euclidean space. This paper investigates the power allocation and outage probability of a superposition coded symmetric relaying system with finite-constellation signaling. We first derive the mutual information (MI) metrics for the system. The derived MI metrics consist of two parts: one represents the MI conveyed by the modulated signal corresponding to its own data, and the other represents the MI conveyed by the modulated signal corresponding to its partners data. Using MI based effective signal-to-noise ratio mapping technique, we attain expressions for the outage probability. Furthermore, we discuss power allocation policies that minimize the outage probability. Simulation results are presented to verify the correctness of the outage probability analysis and the benefits of the power allocation.

Place, publisher, year, edition, pages
Springer Verlag (Germany) , 2013. Vol. 56, no 2
Keyword [en]
superposition coding, symmetric relaying, mutual information, outage probability, power allocation
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-92622DOI: 10.1007/s11432-013-4802-0ISI: 000317246800008OAI: diva2:621684

Funding Agencies|VINNOVA||Knut and Alice Wallenberg Foundation||Sino-Swedish IMT-Advanced and Beyond Cooperative Program|2008DFA11780|Ericsson||

Available from: 2013-05-16 Created: 2013-05-14 Last updated: 2016-08-31

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Larsson, Erik G
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Communication SystemsThe Institute of Technology
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