Bandwidth Efficient Cooperative TDOA Computation for Multicarrier Signals of Opportunity
- 6 February 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Signal Processing
- Vol. 57 (6), 2311-2322
- https://doi.org/10.1109/tsp.2009.2014813
Abstract
Source localization, the problem of determining the physical location of an acoustic or wireless emitter, is commonly encountered in sensor networks which are attempting to locate and track an emitter. Similarly, in navigation systems that do not rely on the global positioning system (GPS), ldquosignals of opportunityrdquo (existing wireless infrastructure) can be used as ad hoc navigation beacons, and the goal is to determine their location relative to a receiver and thus deduce the receiver's position. These two research problems have a very similar mathematical structure. Specifically, in either the source localization or navigation problem, one common approach relies on time difference of arrival (TDOA) measurements to multiple sensors. In this paper, we investigate a bandwidth efficient method of TDOA computation when the signals of opportunity use multicarrier modulation. By exploiting the structure of the multicarrier transmission, much less information needs to be exchanged between sensors compared to the standard cross correlation approach. Analytic and simulation results quantify the performance of the proposed algorithm as a function of the signal-to-noise ratio (SNR) and the bandwidth between the sensors.Keywords
This publication has 23 references indexed in Scilit:
- Synchronization Algorithms for Positioning with OFDM Communications SignalsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Centralized and Distributed Source Localization by a Network of Sensors Using Guaranteed Set EstimationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- The Cramer–Rao Bounds of Hybrid TOA/RSS and TDOA/RSS Location Estimation SchemesIEEE Communications Letters, 2004
- Hybrid TDOA/AOA mobile user location for wideband CDMA cellular systemsIEEE Transactions on Wireless Communications, 2002
- Overview of radiolocation in CDMA cellular systemsIEEE Communications Magazine, 1998
- ML estimation of time and frequency offset in OFDM systemsIEEE Transactions on Signal Processing, 1997
- Robust frequency and timing synchronization for OFDMIEEE Transactions on Communications, 1997
- A simple and efficient estimator for hyperbolic locationIEEE Transactions on Signal Processing, 1994
- The generalized correlation method for estimation of time delayIEEE Transactions on Acoustics, Speech, and Signal Processing, 1976
- Optimum processing for delay-vector estimation in passive signal arraysIEEE Transactions on Information Theory, 1973