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Finite-SNR Analysis and Optimization of Decode-and-Forward Relaying Over Slow-Fading Channels
Royal Institute of Technology (KTH), Stockholm, Sweden.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, The Institute of Technology.
2009 (English)In: IEEE Transactions on Vehicular Technology, ISSN 0018-9545, Vol. 58, no 8, 4292-4305 p.Article in journal (Refereed) Published
Abstract [en]

We provide analytical results on the finite signal-to-noise ratio (SNR) outage performance of packet-based decode-and-forward relaying over a quasi-static fading channel, with different types of transmitter channel state information (CSI). At the relay, we consider repetition coding (RC) and parallel coding (PC). At the destination, we consider receivers based on selection combining (SC), code combining (CC), and maximum-ratio combining (MRC) (the latter only for the case of RC at the relay). Based on available CSI, we optimize the number of channel uses consumed by the source and by the relay for each packet. In doing so, we consider three different protocols that make use of different combinations of long-term CSI, 1-bit CSI, and complete CSI, respectively, at the source node. Several interesting observations emerge. For example, we show that for high SNRs, SC and CC provide the same outage probabilities when the source has perfect CSI.

Place, publisher, year, edition, pages
2009. Vol. 58, no 8, 4292-4305 p.
Keyword [en]
Block length optimization, channel state information (CSI), combining techniques, cooperative communications, decode-and-forward (DF), relay channel
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-51392DOI: 10.1109/TVT.2009.2020501OAI: diva2:274598
©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Majid Nasiri Khormuji and Erik G. Larsson, Finite-SNR Analysis and Optimization of Decode-and-Forward Relaying Over Slow-Fading Channels, 2009, IEEE Transactions on Vehicular Technology, (58), 8, 4292-4305. Available from: 2009-10-30 Created: 2009-10-30 Last updated: 2010-01-18

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