RSS-Based Sensor Localization in the Presence of Unknown Channel Parameters
Artikel i vetenskaplig tidskrift, 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

Författare

Mohammad Reza Gholami

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Sayed Reza Monir Vaghefi

Virginia Polytechnic Institute and State University

Erik Ström

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

IEEE Transactions on Signal Processing

1053-587X (ISSN)

Vol. 61 15 3752-3759 6509479

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Signalbehandling

DOI

10.1109/TSP.2013.2260330