A Semidefinite Programming Approach to Source Localization in Wireless Sensor Networks
Abstract
We propose a novel approach to the source localization and tracking problem in wireless sensor networks. By applying minimax approximation and semidefinite relaxation, we transform the traditionally nonlinear and nonconvex problem into convex optimization problems for two different source localization models involving measured distance and received signal strength. Based on the problem transformation, we develop a fast low-complexity semidefinite programming (SDP) algorithm for two different source localization models. Our algorithm can either be used to estimate the source location or be used to initialize the original nonconvex maximum likelihood algorithm.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 16, 2008
- Accession Number
- ADA500038
Entities
People
- Chen Meng
- Soura Dasgupta
- Zhi Ding
Organizations
- University of California