Title
A RSS-EKF localization method using HMM-based LOS/NLOS channel identification
Abstract
Knowing channel sight condition is important as it has a great impact on localization performance. In this paper, a RSS-based localization algorithm, which jointly takes into consideration the effect of channel sight conditions, is investigated. In our approach, the channel sight conditions experience by a moving target to all sensors is modeled as a hidden Markov model (HMM), with the quantized measured RSSs as its observation. The parameters of HMM are obtained by an off-line training assuming that the LOS/NLOS can be identified during the training phase. With the HMM matrices, a forward-only algorithm can be utilized for real time sight conditions identification. The target is localized by extended Kalman Filter (EKF) by suitably combining with the sight conditions. Simulation results show that our proposed localization strategy can provide good identification to channel sight conditions, hence results in a better localization estimation.
Year
DOI
Venue
2014
10.1109/ICC.2014.6883312
ICC
Keywords
Field
DocType
extended kalman filter,kalman filters,rss ekf localization method,wireless sensor networks,hmm based los nlos channel identification,hidden markov models,channel sight condition,channel estimation,hidden markov model,estimation,real time systems,vectors,markov processes,time measurement
Non-line-of-sight propagation,Extended Kalman filter,Computer science,Matrix (mathematics),Algorithm,Communication channel,Real-time computing,Speech recognition,Sight,Hidden Markov model,RSS
Conference
ISSN
Citations 
PageRank 
1550-3607
6
0.47
References 
Authors
12
4
Name
Order
Citations
PageRank
Xiufang Shi170.82
Yong Huat Chew291.24
Chau Yuen34493263.28
Zaiyue Yang491.23