Research Article
An FRFT-based Approach to Eliminate Multipath Interference in Radio Tomographic Imaging Networks
@INPROCEEDINGS{10.1109/ChinaCom.2013.6694610, author={Heng Liu and Sha Zhan and Ronghua Zhou and Wentan Sun and Jian Cui and Zhenyong Xie and Xu Su}, title={An FRFT-based Approach to Eliminate Multipath Interference in Radio Tomographic Imaging Networks}, proceedings={8th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2013}, month={11}, keywords={radio tomographic imaging shadowing loss multipath interference fractional fourier transform}, doi={10.1109/ChinaCom.2013.6694610} }- Heng Liu
Sha Zhan
Ronghua Zhou
Wentan Sun
Jian Cui
Zhenyong Xie
Xu Su
Year: 2013
An FRFT-based Approach to Eliminate Multipath Interference in Radio Tomographic Imaging Networks
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2013.6694610
Abstract
Radio Tomographic Imaging (RTI) is a technology to locate and track targets by imaging their attenuation to radio signals in wireless networks. Links between many pairs of wireless transceivers experience shadowing losses when the signals travel through the objects, and whereby a linear model can be obtained by relating changes of received signal strength (RSS) to the location of targets in the region. However, the existing shadowing-based RTI technology does not work well in the complex environments because of multipath interference problem. Therefore, we proposed an algorithm based on fractional Fourier transform (FRFT) to estimate the line-of-sight (LOS) signals and separate them from the multipath signals. The simulation results show that our algorithm can eliminate the multipath error in RTI system greatly.