Distributed Bounding of Feasible Sets in Cooperative Wireless Network Positioning
Journal article, 2013

Locations of target nodes in cooperative wireless sensor networks can be confined to a number of feasible sets in certain situations, e.g., when the estimated distances between sensors are larger than the actual distances. Quantifying feasible sets is often challenging in cooperative positioning. In this letter, we propose an iterative technique to cooperatively outer approximate the feasible sets containing the locations of the target nodes. We first outer approximate a feasible set including a target node location by an ellipsoid. Then, we extend the ellipsoid with the measured distances between sensor nodes and obtain larger ellipsoids. The larger ellipsoids are used to determine the intersections containing other targets. Simulation results show that the proposed technique converges after a small number of iterations.

feasible sets

cooperative positioning

Wireless sensor network

outer approximation

ellipsoid approximation

Author

Mohammad Reza Gholami

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Henk Wymeersch

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Sinan Gezici

Bilkent Universitesi

Erik Ström

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

IEEE Communications Letters

1089-7798 (ISSN)

8 1596-1599 6560015

Areas of Advance

Information and Communication Technology

Subject Categories

Signal Processing

DOI

10.1109/LCOMM.2013.070113.130905

More information

Created

10/6/2017