NLOS mitigation for TOA location based on a modified deterministic model

Authors:
Hong Tang;Yongwan Park;Tianshuang Qiu
Affiliations:
School of Electronic and Information Engineering, Dalian University of Technology, Dalian, China and Mobile Communication Laboratory, Yeungnam University, Kyongsan-city, South Korea;Mobile Communication Laboratory, Yeungnam University, Kyongsan-city, South Korea;School of Electronic and Information Engineering, Dalian University of Technology, Dalian, China
Venue:
Research Letters in Signal Processing
Year:
2008

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Abstract

Wireless location becomes difficult due to contamination of measured time-of-arrival (TOA) caused by non-line-of-sight. In this letter, TOA measurements seen at base stations are adjusted by scale factors, and a modified deterministic model is built. An effective numerical solution is proposed to resolve the scale factors and mobile position. A simulation comparison of four algorithms indicates that the proposed algorithm outperforms the other three algorithms.