Minimum Energy coding in CDMA Wireless Sensor Networks

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)....

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Vydáno v:	IEEE transactions on wireless communications Ročník 8; číslo 2; s. 985 - 994
Hlavní autoři:	Fischione, C., Johansson, K.H., Sangiovanni-Vincentelli, A., Ares, B.Z.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York, NY IEEE 01.02.2009 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Applied sciences Bit error rate CDMA Code division multiple access Coding Coding, codes Computer networks control Dynamics Energy consumption Exact sciences and technology Information, signal and communications theory Interference Mathematical models minimum energy coding Modulation coding Multiaccess communication Networks OOK outages parallel and distributed computation power Power control Power system modeling Radio Radiocommunications Sensors Services and terminals of telecommunications Signal and communications theory Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Telemetry. Remote supervision. Telewarning. Remote control Transmission and modulation (techniques and equipments) Transmitters. Receivers Wireless communication Wireless sensor network (WSNs) Wireless sensor networks Performance evaluation Bit error rate Wireless telecommunication Distributed computing Remote sensing Transceiver Energy characteristic Coding parallel and distributed computation Wireless sensor network (WSNs) Minimum energy Signal detection Multiple access On off keying Parallel algorithm Outage outages CDMA OOK minimum energy coding Power control Code division multiple access Distributed algorithm Telecommunication channels Wireless network Numerical simulation Parallel computation Sensor array
ISSN:	1536-1276, 1558-2248, 1558-2248
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Popis
Shrnutí:	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.
Bibliografie:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 content type line 23
ISSN:	1536-1276 1558-2248 1558-2248
DOI:	10.1109/TWC.2009.080239