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, Kommunikations- och antennsystem, Kommunikationssystem

Sayed Reza Monir Vaghefi

Virginia Polytechnic Institute and State University

Erik Ström

Chalmers, Signaler och system, Kommunikations- och antennsystem, 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

Mer information

Skapat

2017-10-06