Bounds on Distributed TDOA-Based Localization of OFDM Sources

Abstract

One main drawback of using Time Difference of Arrival (TDOA) methods for source localization and navigation is that they require centralization of multiple copies of a signal. This paper considers blindly estimating the location of a Cyclic Prefix (CP) in an Orthogonal Frequency Division Multiplexing (OFDM) signal, enabling distributed TDOA computation up to an integer ambiguity. This ambiguity can be resolved using integer least-squares methods, if enough TDOAs are available. The contributions of this paper are derivation of the Cramer-Rao Lower Bound (CRLB) on locating the CP, and hence on the underlying source localization problem.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2010
Accession Number
ADA552679

Entities

People

  • Chunpeng Yan
  • Huihui Fan
  • Richard K. Martin

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Algorithms
  • Ambiguity
  • Bandwidth
  • Data Science
  • Estimators
  • Frequency
  • Frequency Domain
  • Governments
  • Image Registration
  • Information Processing
  • Information Science
  • Intervals
  • Least Squares Method
  • Numbers
  • Statistical Algorithms

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Approximation Theory.
  • Computer Networking