Dynamic fine-grained localization in Ad-Hoc networks of sensors
Proceedings of the 7th annual international conference on Mobile computing and networking
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Localization from mere connectivity
Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
Using proximity and quantized RSS for sensor localization in wireless networks
WSNA '03 Proceedings of the 2nd ACM international conference on Wireless sensor networks and applications
Poster abstract: anchor-free distributed localization in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Error characteristics of ad hoc positioning systems (aps)
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
Wireless Communications
Robust distributed network localization with noisy range measurements
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
A Partial-Range-Aware Localization Algorithm for Ad-hoc Wireless Sensor Networks
LCN '04 Proceedings of the 29th Annual IEEE International Conference on Local Computer Networks
Resilient Localization for Sensor Networks in Outdoor Environments
ICDCS '05 Proceedings of the 25th IEEE International Conference on Distributed Computing Systems
Connectivity in wireless ad-hoc networks with a log-normal radio model
Mobile Networks and Applications
Semidefinite programming based algorithms for sensor network localization
ACM Transactions on Sensor Networks (TOSN)
Wireless localization using self-organizing maps
Proceedings of the 6th international conference on Information processing in sensor networks
Cramér-Rao-type bounds for localization
EURASIP Journal on Applied Signal Processing
Localization using signal strength: to range or not to range?
Proceedings of the first ACM international workshop on Mobile entity localization and tracking in GPS-less environments
Optimal RSS threshold selection in connectivity-based localization schemes
Proceedings of the 11th international symposium on Modeling, analysis and simulation of wireless and mobile systems
On the error characteristics of multihop node localization in ad-hoc sensor networks
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Organizing a global coordinate system from local information on an ad hoc sensor network
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Connectivity and RSSI based localization scheme for wireless sensor networks
ICIC'05 Proceedings of the 2005 international conference on Advances in Intelligent Computing - Volume Part II
Relative location estimation in wireless sensor networks
IEEE Transactions on Signal Processing
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RF-based localization has gained popularity as a low-cost solution to support position awareness in ad hoc networks. The received signal strength (RSS) measured by pairs of nodes can be used to obtain either range estimates or connectivity information. It is not clear, however: 1) when a range-based scheme should be used in favor of a connectivity-based one, and 2) how to optimally convert the RSS into connectivity data. This paper uses analysis of the Fisher information and the Cramér-Rao bound (CRB) to answer these questions. Solutions are found by comparing the network connectivity against two values: the critical connectivity (CC) and the optimal connectivity (OC). After discussing the properties of both values, we show how their approximation can be used to improve the performance of RF-based localization systems.