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A minimum entropy estimation based mobile positioning algorithm

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2 Author(s)
Guolin Sun ; Dept. of Electron. Eng., Fudan Univ., Shanghai ; Bo Hu

The problem of locating a mobile terminal has received significant attention in the field of wireless communications. The wireless location problem is made difficult by nonsymmetric contamination of measured time of arrival (TOA) data caused by non-line-of-sight (NLOS) propagation. In this paper, a novel robust NLOS error mitigation algorithm based on minimum entropy estimation is proposed without prior statistics knowledge of NLOS propagation error.We compare the proposed algorithm with two additional ones, the normal least-squares estimator and the Huber estimator, through MATLAB simulation in different COST 259 channel environment. Results reveal that the proposed algorithm is more robust to NLOS error than the other two, although it is not always superior to the other two on location accuracy.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:8 ,  Issue: 1 )

Date of Publication:

Jan. 2009

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