A Spectrally Efficient Transmission Scheme for Half-Duplex Decode-and-Forward Relaying
2007 (English)In: Proceedings of the 50th IEEE Global Telecommunications Conference (GLOBECOM'07), 2007, 1663-1667 p.Conference paper (Refereed)
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.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-25605DOI: 10.1109/GLOCOM.2007.320ISBN: 978-1-4244-1043-9OAI: oai:DiVA.org:liu-25605DiVA: diva2:246092