DocumentCode :
3327125
Title :
Performance of Decentralized Detection in a Resource-constrained Sensor Network with Non-orthogonal Communications
Author :
Al Tarzai, Kossai A. ; Jayaweera, Sudharman K. ; Aravinthan, Visvakumar
Author_Institution :
Dept. of Electr. & Comput. Eng., Wichita State Univ., KS
fYear :
2005
fDate :
Oct. 28 2005-Nov. 1 2005
Firstpage :
437
Lastpage :
441
Abstract :
The performance of decentralized detection in a resource-limited wireless sensor network is investigated. The system is assumed to be subjected to a total power constraint and all sensors are assumed to perform analog relay-amplifier local processing. Under these assumptions, we show that, we can monotonically improve the fusion performance by using non-orthogonal sensor-to-fusion center communication, as opposed to orthogonal communications. In order to quantify the performance, we employ circulant matrix theory to derive closed-form asymptotic expressions. These asymptotic results allow us to observe the effect of each parameter on the total system performance. Numerical results show that these asymptotics provide a very good approximation to the exact performance, even for a small number of sensors
Keywords :
matrix algebra; power amplifiers; relays; sensor fusion; signal detection; wireless sensor networks; circulant matrix theory; closed-form asymptotic expressions; decentralized detection performance; nonorthogonal sensor-to-fusion center communication; power constraint; relay-amplifier local processing; resource-constrained sensor network; resource-limited wireless sensor network; Intelligent networks; Military communication; Power amplifiers; Power system relaying; Relays; Sensor fusion; Sensor systems; System performance; Testing; Wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems and Computers, 2005. Conference Record of the Thirty-Ninth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
ISSN :
1058-6393
Print_ISBN :
1-4244-0131-3
Type :
conf
DOI :
10.1109/ACSSC.2005.1599785
Filename :
1599785
Link To Document :
بازگشت