RSS-Based Sensor Localization in the Presence of Unknown Channel Parameters
Journal article, 2013

This correspondence studies the received signal strength-based localization problem when the transmit power or path-loss exponent is unknown. The corresponding maximum-likelihood estimator (MLE) poses a difficult nonconvex optimization problem. To avoid the difficulty in solving the MLE, we use suitable approximations and formulate the localization problem as a general trust region subproblem, which can be solved exactly under mild conditions. Simulation results show a promising performance for the proposed methods, which also have reasonable complexities compared to existing approaches.

path-loss exponent

received signal strength

transmit power

General trust region subproblem

wireless sensor network

localization

Author

Mohammad Reza Gholami

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

Sayed Reza Monir Vaghefi

Virginia Polytechnic Institute and State University

Erik Ström

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

IEEE Transactions on Signal Processing

1053-587X (ISSN)

Vol. 61 15 3752-3759 6509479

Areas of Advance

Information and Communication Technology

Subject Categories

Signal Processing

DOI

10.1109/TSP.2013.2260330

More information

Created

10/6/2017