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A Novel Cooperative NLOS Error Mitigation Method in Hybrid Cellular Networks

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3 Author(s)
Xue Lin ; Coll. of Phys. & Electron., Shan Dong Normal Univ., Jinan ; Liu Ju ; Sumei Chen

A novel mobile location method based on cooperative positioning using time-of-arrival (TOA) measurements to mitigate the impact of non-line-of-sight (NLOS) error in a hybrid cellular network is proposed. Our way to tackle the problem of NLOS error mitigation is divided into two steps: First, a technique is exploited to decide whether there is a NLOS path from the BS to the MS using range measurements sequence; Second, ad-hoc relaying stations (ARSs), which have single-hop line-of-sight (LOS) links with both the base stations (BSs) and the mobile station (MS), are included to establish a new position location scheme if NLOS error is present. Simulation results show that our proposed method can achieve location estimation accuracy enhancement and exhibit significant improvement over the conventional NLOS range reconstruction approach.

Published in:

Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on

Date of Conference:

12-14 Oct. 2008

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