Efficient Direct Localization of OFDM Emitters in Multipath Environment With Mobile Receivers

Jiahao Bai, Guohua Wei*, Siqiang Wang, Xu Wang, Zesong Fei

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

For the purpose of locating the orthogonal frequency division multiplexing (OFDM) signal emitter efficiently and accurately in multipath environment, an innovative direction position determination (DPD) algorithm based on the multiple carrier characteristic of OFDM signals is proposed in this paper. The time of the arrival (TOA), angle of arrival (AOA) and Doppler frequency shift information contained in the observed data are jointly employed to locate the emitter. High-dimensional search can be avoided by decoupling unknown parameters and the estimation performance is improved due to the expansion of the subspace. The compact closed-form expressions of the Cramer-Rao lower bound (CRLB) corresponding to the parameters of interest are also derived. Simulation results show that compared with the traditional DPD based on MUSIC algorithm, the localization performance of the proposed algorithm can attain the CRLB at higher noise levels.

Original languageEnglish
Pages (from-to)545-556
Number of pages12
JournalIEEE Transactions on Vehicular Technology
Volume71
Issue number1
DOIs
Publication statusPublished - 1 Jan 2022

Keywords

  • Extended subspace
  • Multipath environment
  • Orthogonal frequency division multiplexing
  • Passive localization

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