Geometry and motion based positioning algorithms for mobile tracking in NLOS environments

Kegen Yu*, Eryk Dutkiewicz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)


This paper presents positioning algorithms for cellular network-based mobile tracking in severe non-line-of-sight (NLOS) propagation scenarios. The aim of the algorithms is to enhance positional accuracy of network-based positioning systems when the GPS receiver does not perform well due to the hostile environment. Two positioning methods with NLOS mitigation are proposed. Constrained optimization is utilized to minimize the cost function which takes account of the NLOS error. Mobile velocity and heading angle information is exploited to greatly enhance position accuracy. It is observed through simulation that the proposed methods significantly outperform other cellular network based positioning algorithms. Further, the exact expressions of the CRLB are derived when the distance measurement error is the sum of an exponential and a Gaussian variable.

Original languageEnglish
Title of host publication2010 IEEE Global Telecommunications Conference, GLOBECOM 2010
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Print)9781424456383
Publication statusPublished - 2010
Event53rd IEEE Global Communications Conference, GLOBECOM - 2010 - Miami, United States
Duration: 6 Dec 201010 Dec 2010


Other53rd IEEE Global Communications Conference, GLOBECOM - 2010
CountryUnited States


  • Constrained optimization
  • Cramer-Rao lower bound
  • Heading angle
  • Mobile tracking
  • NLOS mitigation

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