Localizing WiFi access points using signal strength

Jahyoung Koo, Hojung Cha

Research output: Contribution to journalArticlepeer-review

105 Citations (Scopus)


When estimating the location of WiFi access points (AP) in an anonymous environment, the required parameters of the radio propagation model are not readily obtainable. This letter investigates the use of received signal strength (RSS) for range-based AP localization when no information on the radio propagation model is provided. To achieve this goal, we linearly approximate the exponential relationship between RSS and distance, and apply a multilateration technique. Our simulation results validate that estimation of an AP location is possible given four or more RSS measurements at different locations.

Original languageEnglish
Article number5672458
Pages (from-to)187-189
Number of pages3
JournalIEEE Communications Letters
Issue number2
Publication statusPublished - 2011 Feb

Bibliographical note

Funding Information:
Manuscript received July 31, 2010. The associate editor coordinating the review of this letter and approving it for publication was C. Comaniciu. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No.2010-0000405). The authors are with the Mobile Embedded System Laboratory (MOBED), Department of Computer Science, Yonsei University, Seoul, Korea (e-mail: {koojh, hjcha}@cs.yonsei.ac.kr). Digital Object Identifier 10.1109/LCOMM.2011.121410.101379

All Science Journal Classification (ASJC) codes

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


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