Energy-Efficient Physical Layer Design for Wireless Sensor Network Links

Author

Costa, Felipe M. ; Ochiai, Hideki

Author_Institution

Nokia Inst. of Technol., Terra Nova, Brazil

fYear

2011

fDate

5-9 June 2011

Firstpage

1

Lastpage

5

Abstract

We study the energy consumption of wireless sensor network links applying three widely used digital modulation schemes, i.e. MQAM, MPSK, and noncoherent MFSK. For MQAM and MPSK, pulse shaping is considered. Both transmitted signal power and circuit power are taken into account where the former is modeled using the relationship between cutoff rate and signal-to-noise ratio (SNR) and the latter is modeled considering the power consumption of typical hardware used in wireless sensor nodes. For each modulation type, the optimum parameters for minimizing the energy per information bit are derived. Moreover, a comparison among the three modulation types is presented.

Keywords

frequency shift keying; phase shift keying; pulse shaping; quadrature amplitude modulation; radio links; wireless sensor networks; MPSK; MQAM; circuit power; digital modulation schemes; energy consumption; energy-efficient physical layer design; noncoherent MFSK; power consumption; pulse shaping; signal-to-noise ratio; transmitted signal power; wireless sensor network links; Bandwidth; Energy consumption; Modulation; Peer to peer computing; Power demand; Signal to noise ratio; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (ICC), 2011 IEEE International Conference on

Conference_Location

Kyoto

ISSN

1550-3607

Print_ISBN

978-1-61284-232-5

Electronic_ISBN

1550-3607

Type

conf

DOI

10.1109/icc.2011.5963082

Filename

5963082