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Improving Collaborative Transmit Diversity by Using Constellation Rearrangement
School of Electrical Engineering, Royal Institute of Technology.
School of Electrical Engineering, Royal Institute of Technology.ORCID iD: 0000-0002-7599-4367
2007 (English)In: Proceedings of the IEEE Wireless Communications and Networking Conference (WCNC'07), 2007, 803-807 p.Conference paper, Published paper (Refereed)
Abstract [en]

The paper proposed an enhancement to cooperative transmit diversity based on uncoded detect-and-forward, by using so-called constellation rearrangement (CR) at the relay. With CR, the relay uses a bit-symbol mapping that is different from the one used by the source. The authors find the optimal bit-symbol mappings for both the source and the relay and the associated optimal detectors, and show that the improvement over conventional relaying with Gray mapping at the source and the relay can amount to a power gain of several dB. This performance improvement comes at no additional power or bandwidth expense, and at virtually no increase in complexity.

Place, publisher, year, edition, pages
2007. 803-807 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-42504DOI: 10.1109/WCNC.2007.153Local ID: 65146ISBN: 1-4244-0659-5 (print)ISBN: 1-4244-0658-7 (print)OAI: oai:DiVA.org:liu-42504DiVA: diva2:263361
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2016-08-31Bibliographically approved

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Larsson, Erik G.

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CiteExportLink to record
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