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A Spectrally Efficient Transmission Scheme for Half-Duplex Decode-and-Forward Relaying
Royal Institute of Technology (KTH), Stockholm, Sweden.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, The Institute of Technology.
2007 (English)In: Proceedings of the 50th IEEE Global Telecommunications Conference (GLOBECOM'07), 2007, 1663-1667 p.Conference paper (Refereed)
Abstract [en]

We propose a spectrally efficient transmission scheme for the half-duplex relay channel. In the proposed scheme, the relay combines N detected r-dimensional symbols and generates M new r-dimensional symbols, where M < N, using a linear transformation. The proposed linear transformation preserves the signal energy, and it facilitates decoupled symbol detection at the receiver. We also present an optimized design for the case of complex scalar modulation (r = 2) with N = 2 and M = 1. This design increases the spectral efficiency by 33 % compared to conventional decode- or amplify-and-forward relaying.

Place, publisher, year, edition, pages
2007. 1663-1667 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-25605DOI: 10.1109/GLOCOM.2007.320ISBN: 978-1-4244-1043-9OAI: diva2:246092
Available from: 2009-10-08 Created: 2009-10-08 Last updated: 2010-01-14

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Larsson, Erik G.
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Communication SystemsThe Institute of Technology
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ReferencesLink to record
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