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Minimum Energy Coding in CDMA Wireless Sensor Networks
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9810-3478
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9940-5929
KTH.
2009 (English)In: IEEE Transactions on Wireless Communications, ISSN 1536-1276, E-ISSN 1558-2248, Vol. 8, no 2, 985-994 p.Article in journal (Refereed) Published
Abstract [en]

A theoretical framework is proposed for accurate comparison of minimum energy coding in Coded Division Multiple Access (CDMA) Wireless Sensor Networks (WSNs). Energy consumption and reliability are analyzed for two coding schemes: Minimum Energy coding (ME), and Modified Minimum Energy coding (MME). A detailed model of consumed energy is described as function of the coding, radio transmit power, the characteristics of the transceivers, and the dynamics of the wireless channel. Since CDMA is strongly limited by multi-access interference, the system model includes all the relevant characteristics of wireless propagation. A distributed and asynchronous algorithm, which minimizes the total energy consumption by controlling the radio power, is developed. Numerical results are presented to validate the theoretical analysis and show under which conditions MME outperforms ME with respect to energy consumption and bit error rate. It is concluded that MME is more energy efficient than ME only for short codewords.

Place, publisher, year, edition, pages
2009. Vol. 8, no 2, 985-994 p.
Keyword [en]
Wireless sensor network (WSNs), minimum energy coding, CDMA, OOK, power, control, outages, parallel and distributed computation
Identifiers
URN: urn:nbn:se:kth:diva-18168DOI: 10.1109/twc.2009.080239ISI: 000263297300060Scopus ID: 2-s2.0-61349191713OAI: oai:DiVA.org:kth-18168DiVA: diva2:336214
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Flischione, CarloJohansson, Karl H.

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