Title :
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
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;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5963082
