TY - GEN
T1 - Factor graph approach for joint passive localization and receiver synchronization in wireless sensor networks
AU - Yuan, Weijie
AU - Wu, Nan
AU - Wang, Hua
AU - Kuang, Jingming
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/12/21
Y1 - 2016/12/21
N2 - Obtaining the location of a 'passive' target in wireless sensor networks has attracted numerous interest in recent years. This paper considers the passive localization based on time-of-arrival measurements in an asynchronous sensor network where the receivers are with both clock skew and offset. Based on the factor graph model, the beliefs (approximated marginal) of target location and clock parameters can be obtained by executing iterative message passing algorithms. To reduce the huge complexity of particle based method, we propose two approximate approaches to determine parametric Gaussian message passing. Simulation results show that the proposed low complexity algorithm performs close to the particle-based method and attain the Cramer-Rao bound.
AB - Obtaining the location of a 'passive' target in wireless sensor networks has attracted numerous interest in recent years. This paper considers the passive localization based on time-of-arrival measurements in an asynchronous sensor network where the receivers are with both clock skew and offset. Based on the factor graph model, the beliefs (approximated marginal) of target location and clock parameters can be obtained by executing iterative message passing algorithms. To reduce the huge complexity of particle based method, we propose two approximate approaches to determine parametric Gaussian message passing. Simulation results show that the proposed low complexity algorithm performs close to the particle-based method and attain the Cramer-Rao bound.
KW - Cramer-Rao bound
KW - Passive localization
KW - clock skew and offset
KW - factor graph
KW - message passing algorithm
KW - wireless sensor networks
UR - http://www.scopus.com/inward/record.url?scp=85010042293&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2016.7794848
DO - 10.1109/PIMRC.2016.7794848
M3 - Conference contribution
AN - SCOPUS:85010042293
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
BT - 2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 27th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2016
Y2 - 4 September 2016 through 8 September 2016
ER -
