Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/7241
Title: Optimizing Physical-Layer Parameters for Wireless Sensor Networks
Authors: Holland, Matthew
Wang, Tianqi
Tavlı, Bülent
Seyedi, Alireza
Heinzelman, Wendi
Keywords: Design
Performance
Algorithms
Energy and resource management
modeling of systems and physical environments
physical-layer network protocols
Issue Date: 2011
Publisher: Assoc Computing Machinery
Abstract: As wireless sensor networks utilize battery-operated nodes, energy efficiency is of paramount importance at all levels of system design. In order to save energy in the transfer of data from the sensor nodes to one or more sinks, the data may be routed through other nodes rather than transmitting it directly to the sink(s). In this article, we investigate the problem of energy-efficient transmission of data over a noisy channel, focusing on the setting of physical-layer parameters. We derive a metric called the energy per successfully received bit, which specifies the expected energy required to transmit a bit successfully over a particular distance given a channel noise model. By minimizing this metric, we can find, for different modulation schemes, the energy-optimal relay distance and the optimal transmit energy as a function of channel noise level and path loss exponent. These results enable network designers to select the hop distance, transmit power, and/or modulation scheme that maximize network lifetime.
URI: https://doi.org/10.1145/1921621.1921622
https://hdl.handle.net/20.500.11851/7241
ISSN: 1550-4859
1550-4867
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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