Paper Info
Title
Energy efficient cooperative network localization.
Abstract
Accurate position information enables numerous location-based applications. Wireless network localization is a promising localization technique that permits cooperation among mobile objects to enhance localization services. The allocation of transmitting power for such networks plays a critical role since it determines network lifetime, throughput, as well as the localization accuracy. In this paper, we establish an optimization framework for power allocation in cooperative localization networks. We first show that the optimal solution for the power allocation problem can be obtained by semi-definite programs (SDPs). For implementation in cooperative localization networks, we develop efficient and distributed power allocation strategies via relaxation of the original problem. In particular, we decompose the power allocation problem into infrastructure and cooperation parts. We transform the former into SDPs and derive upper bounds for the localization accuracy of the latter. These bounds enable us to develop efficient distributed strategies. Simulation results show that these strategies can achieve significant performance improvement compared to the unoptimized strategies in terms of localization accuracy.
Year
DOI
Venue
2014
10.1109/ICC.2014.6884108
ICC
Keywords
Field
DocType
accuracy,linear programming,niobium,resource allocation,cellular networks,localization,convex optimization,resource management,convex functions,mathematical programming
Wireless network,Distributed power,Efficient energy use,Computer science,Throughput,Performance improvement,Distributed computing
Conference
ISSN
Citations 
PageRank 
1550-3607
3
0.42
References 
Authors
0
3
Name
Order
Citations
PageRank
Wenhan Dai122217.69
Yuan Shen21151111.52
Moe Z. Win32225196.12