Cross-layer network lifetime optimization considering transmit and signal processing power in WSNs


Yetgin, Halil, Cheung, Kent Tsz Kan, El-Hajjar, Mohammed and Hanzo, Lajos (2014) Cross-layer network lifetime optimization considering transmit and signal processing power in WSNs [in special issue: Intelligent Wireless Sensor Networks and Applications] IET Wireless Sensor Systems, 4, (4), pp. 176-182. (doi:10.1049/iet-wss.2014.0049).

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Description/Abstract

Maintaining high energy efficiency is essential for increasing the lifetime of wireless sensor networks (WSNs), where the battery of the sensor nodes cannot be routinely replaced. Nevertheless, the energy budget of the WSN strictly relies on the communication parameters, where the choice of both the transmit power as well as of the modulation and coding schemes (MCSs) plays a significant role in maximizing the network lifetime (NL). In this paper, we optimize the NL of WNSs by analysing the impact of the physical layer parameters as well as of the signal processing power (SPP) P_sp on the NL. We characterize the underlying trade-offs between the NL and bit error ratio (BER) performance for a predetermined set of target signal-to-interference-plus-noise ratio (SINR) values and for different MCSs using periodic transmit-time slot (TS) scheduling in interference-limited WSNs. For a per-link target BER requirement (PLBR) of 10^?3, our results demonstrate that a ’continuous-time’ NL in the range of 0.58?4.99 years is achieved depending on the MCSs, channel configurations, and SPP.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1049/iet-wss.2014.0049
ISSNs: 2043-6386 (print)
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Organisations: Southampton Wireless Group
ePrint ID: 370199
Date :
Date Event
16 October 2014Accepted/In Press
17 October 2014e-pub ahead of print
12 December 2014Published
Date Deposited: 27 Oct 2014 11:19
Last Modified: 17 Apr 2017 07:11
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/370199

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