Title :
A Concave-Convex Procedure for TDOA Based Positioning
Author :
Gholami, Mohammad Reza ; Gezici, Sinan ; Strom, Erik G.
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
This letter investigates the time-difference-of-arrival based positioning problem in wireless sensor networks. We consider the least-mean absolute, i.e., the ℓ1 norm, minimization of the residual errors and formulate the positioning problem as a difference of convex functions (DC) programming. We then employ a concave-convex procedure to solve the corresponding DC programming. Simulation results illustrate the improved performance of the proposed approach compared to existing methods.
Keywords :
concave programming; convex programming; direction-of-arrival estimation; radionavigation; time-of-arrival estimation; wireless sensor networks; DC programming; TDOA based positioning; concave-convex procedure; convex function programming; least-mean absolute; residual error minimization; time-difference-of-arrival based positioning problem; wireless sensor networks; Complexity theory; Convex functions; Maximum likelihood estimation; Minimization; Noise; Optimization; Programming; DC programming; Wireless sensor network; concave-convex procedure; time-difference-of-arrival;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.020513.122732
