Title :
A Comparison of Modulations for Energy Optimization in Wireless Sensor Network Links
Author :
Costa, Felipe M. ; Ochiai, Hideki
Author_Institution :
Dept. of Electr. & Comput. Eng., Yokohama Nat. Univ., Yokohama, Japan
Abstract :
We study the energy consumption of individual links in wireless sensor networks (WSN). Three widely used digital modulation schemes, i.e. MQAM, MPSK, and MFSK, are analyzed and compared. Both transmitted signal power and circuit power consumptions are considered. For modeling the signal power, we use the relation between channel capacity or cutoff rate and signal to noise ratio (SNR). By numerical calculation, we find the optimized parameters for minimizing the energy consumption per information bit in a point-to-point wireless link.
Keywords :
channel capacity; frequency shift keying; optimisation; phase shift keying; quadrature amplitude modulation; radio links; wireless sensor networks; MFSK; MPSK; MQAM; channel capacity; digital modulation; energy consumption; energy optimization; point-to-point wireless link; wireless sensor network links; Energy consumption; Information rates; Modulation; Peer to peer computing; Receivers; Signal to noise ratio; Wireless sensor networks;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2010.5683412
