NDLI: Outage based power allocation for a lossy forwarding two-relaying system

Content Provider	IEEE Xplore Digital Library
Author	Wolf, A. Matthe, M. Festag, A. Fettweis, G.
Copyright Year	2015
Description	Author affiliation: Dept. of Mobile Commun. Syst., Tech. Univ. Dresden, Dresden, Germany (Wolf, A.; Matthe, M.; Festag, A.; Fettweis, G.)
Abstract	The extension of Decode-and-Forward (DF) relaying by lossy forwarding has the potential to ensure a reliable multi-hop message transport in wireless mesh networks. Unlike in conventional DF relaying, with lossy forwarding a relay forwards a message regardless whether errors have been detected after decoding. At the destination, a proper joint decoding technique exploits the high correlation of messages received via different network paths. According to the Slepian-Wolf correlated source coding theorem a performance improvement compared with the conventional DF relaying can be expected. The performance can be optimized by a power allocation scheme that distributes the total transmit power budget between source and relay nodes. This paper analyzes the outage probability (OP) based on the Slepian-Wolf source correlation theorem for a system with two relays and designs a power allocation scheme to minimize the OP. The proposed scheme reduces the OP by up to 1.5 orders of magnitude compared to the reference case of equal power allocation. We also compare the performance gain of a system with two relays against the case with a single relay for the same total transmit power budget. Results show a reduction of the OP of at least one and up to two orders of magnitude.
Starting Page	267
Ending Page	272
File Size	1748511
Page Count	6
File Format	PDF
e-ISBN	9781467381864
DOI	10.1109/CAMAD.2015.7390522
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-07
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Source coding Integral equations Entropy Decoding Resource management Relays Signal to noise ratio
Content Type	Text
Resource Type	Article

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