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Published in: EURASIP Journal on Wireless Communications and Networking 1/2006

Open Access 01-12-2006 | Research Article

Error Control Coding in Low-Power Wireless Sensor Networks: When Is ECC Energy-Efficient?

Authors: Sheryl L. Howard, Christian Schlegel, Kris Iniewski, Kris Iniewski

Published in: EURASIP Journal on Wireless Communications and Networking | Issue 1/2006

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Abstract

This paper examines error control coding (ECC) use in wireless sensor networks (WSNs) to determine the energy efficiency of specific ECC implementations in WSNs. ECC provides coding gain, resulting in transmitter energy savings, at the cost of added decoder power consumption. This paper derives an expression for the critical distance https://static-content.springer.com/image/art%3A10.1155%2FWCN%2F2006%2F74812/MediaObjects/13638_2005_Article_1266_IEq1_HTML.gif , the distance at which the decoder's energy consumption per bit equals the transmit energy savings per bit due to coding gain, compared to an uncoded system. Results for several decoder implementations, both analog and digital, are presented for https://static-content.springer.com/image/art%3A10.1155%2FWCN%2F2006%2F74812/MediaObjects/13638_2005_Article_1266_IEq2_HTML.gif in different environments over a wide frequency range. In free space, https://static-content.springer.com/image/art%3A10.1155%2FWCN%2F2006%2F74812/MediaObjects/13638_2005_Article_1266_IEq3_HTML.gif is very large at lower frequencies, suitable only for widely spaced outdoor sensors. In crowded environments and office buildings, https://static-content.springer.com/image/art%3A10.1155%2FWCN%2F2006%2F74812/MediaObjects/13638_2005_Article_1266_IEq4_HTML.gif drops significantly, to 3 m or greater at 10 GHz. Interference is not considered; it would lower https://static-content.springer.com/image/art%3A10.1155%2FWCN%2F2006%2F74812/MediaObjects/13638_2005_Article_1266_IEq5_HTML.gif . Analog decoders are shown to be the most energy-efficient decoders in this study.
Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://​creativecommons.​org/​licenses/​by/​2.​0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Metadata
Title
Error Control Coding in Low-Power Wireless Sensor Networks: When Is ECC Energy-Efficient?
Authors
Sheryl L. Howard
Christian Schlegel
Kris Iniewski
Kris Iniewski
Publication date
01-12-2006
Publisher
Springer International Publishing
DOI
https://doi.org/10.1155/WCN/2006/74812

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