NDLI: Coding Opportunities from Similar Data in Wireless Cooperation Diversity Systems

Content Provider	IEEE Xplore Digital Library
Author	Volkhausen, T. Schinkothe, K. Karl, H.
Copyright Year	2011
Abstract	In wireless communication, diversity can be exploited for improved robustness. For wireless sensor networks, cooperation diversity protects a transmission from a source to a destination node by having a relay node overhear and repeat the source's transmission. Additionally, the data readings of the source and the relay node can be similar. The relay's data can hence be interpreted as a distorted version of the source's data. We show how to use forward error correction techniques to employ these similarities to reduce errors in the source-relay transmission. Moreover, we propose a new protocol, Coded Cooperation with Similar Data (CCSD), to take advantage of similar data to improve the source-to-relay link of Coded Cooperation (CC). CCSD is a conservative extension of CC, i.e., if data of source and relay are not similar, CCSD behaves like CC. We evaluate the performance of CCSD by simulation under realistic, symbol-wise Rayleigh fading. A comparison with the established Selection Decode-and-Forward (SDF) cooperation protocol, CC, and direct transmission shows superiority of the new CCSD protocol, especially for situations with a bad source-to-relay channel, good relay-to-destination channel, and strong error correcting codes.
Starting Page	146
Ending Page	148
File Size	177365
Page Count	3
File Format	PDF
ISBN	9781457713453
ISSN	21556806
DOI	10.1109/MASS.2011.126
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-17
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading data similarity Protocols wireless sensor network Encoding Relays wireless communication Wireless communication cooperation diversity distributed source coding Diversity reception Signal to noise ratio cooperation
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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