Title :
Energy Efficient Design of WSN Based on an Accurate Power Consumption Model
Author :
Kan, Baoqiang ; Cai, Li ; Zhao, Lei ; Xu, Yongjun
Author_Institution :
Coll. of Sci., Air Force Eng. Univ., Xian
Abstract :
A particular challenge in maintaining extended wireless sensor networks (WSNs) lifetime lies in achieving communications with low power. For better understanding of the design trade offs of WSNs, a more accurate power consumption model for wireless sensor node is proposed. Different from models ever showed, in which the power consumption of each component in WSN node is assumed constant, the new one takes into account energy dissipation of circuits in practical physical layer. It shows that there are some parameters such as data rate, carrier frequency, RF output power et al, which have a significant effect on the WSN node with the metric energy per useful bit (EPUB). Then an optimal design method to make the network energy efficient is described by adjusting one or more of these parameters. The efficiency of the strategy was validated by mathematical analysis and simulations. The results showed that the EPUB can be reduced by optimally choosing the rate-power combination based on the proposed power consumption model for a given load .
Keywords :
mathematical analysis; power consumption; wireless sensor networks; RF output power; carrier frequency; energy efficient design; energy per useful bit; mathematical analysis; physical layer; power consumption model; wireless sensor networks; Circuits; Design methodology; Energy consumption; Energy dissipation; Energy efficiency; Mathematical analysis; Physical layer; Power generation; Radio frequency; Wireless sensor networks;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.683