TY - GEN
T1 - Optimal precoding design for decentralized detection of deterministic signals
AU - Fang, Jun
AU - Li, Hongbin
AU - Chen, Zhi
AU - Li, Shaoqian
PY - 2012
Y1 - 2012
N2 - We consider a decentralized detection problem in a power-constrained wireless sensor networks (WSNs), in which a number of sensor nodes collaborate to detect the presence of a deterministic vector signal. The signal to be detected is assumed known a priori. Each sensor conducts a local linear processing to convert its observations into one or multiple messages. The messages are conveyed to the fusion center (FC) by an uncoded amplify-and-forward scheme, where a global decision is made. Given a total network transmit power constraint, we investigate the optimal linear processing strategy for each sensor. Our study finds that the optimal linear precoder has the form of a matched filter. Depending on the channel characteristics, one or multiple versions of the filtered/compressed message should be reported to the FC.
AB - We consider a decentralized detection problem in a power-constrained wireless sensor networks (WSNs), in which a number of sensor nodes collaborate to detect the presence of a deterministic vector signal. The signal to be detected is assumed known a priori. Each sensor conducts a local linear processing to convert its observations into one or multiple messages. The messages are conveyed to the fusion center (FC) by an uncoded amplify-and-forward scheme, where a global decision is made. Given a total network transmit power constraint, we investigate the optimal linear processing strategy for each sensor. Our study finds that the optimal linear precoder has the form of a matched filter. Depending on the channel characteristics, one or multiple versions of the filtered/compressed message should be reported to the FC.
KW - Decentralized detection
KW - precoding design
KW - wireless sensor networks
UR - http://www.scopus.com/inward/record.url?scp=84867220601&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867220601&partnerID=8YFLogxK
U2 - 10.1109/SAM.2012.6250560
DO - 10.1109/SAM.2012.6250560
M3 - Conference contribution
AN - SCOPUS:84867220601
SN - 9781467310710
T3 - Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop
SP - 57
EP - 60
BT - 2012 IEEE 7th Sensor Array and Multichannel Signal Processing Workshop, SAM 2012
T2 - 2012 IEEE 7th Sensor Array and Multichannel Signal Processing Workshop, SAM 2012
Y2 - 17 June 2012 through 20 June 2012
ER -