Mobile position location using factor graphs

Jung Chieh Chen, Ching Shyang Maa, Yeong Cheng Wang, Jiunn Tsair Chen

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Making use of the time-of-arrival measurements and their stochastic properties, we propose a low-complexity high-accuracy algorithm to estimate the location of a target mobile station (MS). Under a factor graph framework, in the proposed algorithm, soft-information is efficiently exchanged among local processing units to iteratively purify the estimate of the MS location. Numerical results show that the proposed algorithm not only enjoys advantages of low complexity, suitable for integrated-circuit implementation, but it is also able to achieve performance very close to the optimum achievable bound, the maximum-likelihood bound.

Original languageEnglish
Pages (from-to)431-433
Number of pages3
JournalIEEE Communications Letters
Issue number9
Publication statusPublished - 2003 Sept

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering


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