Sciweavers

746 search results - page 56 / 150
» Near-Optimal Radio Use for Wireless Network Synchronization
Sort
View
IEEECSA
2009
14 years 7 months ago
A Fine-Grained Localization Scheme Using a Mobile Beacon Node for Wireless Sensor Networks
In this paper, we present a fine-grained localization algorithm for wireless sensor networks using a mobile beacon node. The algorithm is based on distance measurement using RSSI. ...
Kezhong Liu, Ji Xiong, Yongqiang Cui, Dong Han
INFOCOM
2010
IEEE
14 years 8 months ago
Cooperative Boundary Detection for Spectrum Sensing Using Dedicated Wireless Sensor Networks
Abstract—Spectrum sensing is one of the key enabling technologies in Cognitive Radio Networks (CRNs). In CRNs, secondary users (SUs) are allowed to exploit the spectrum opportuni...
Yanyan Yang, Yunhuai Liu, Qian Zhang, Lionel M. Ni
JSAC
2010
131views more  JSAC 2010»
14 years 8 months ago
Joint synchronization and localization using TOAs: A linearization based WLS solution
—Joint synchronization and localization using time of arrival (TOA) measurements is a very important research topic for many wireless ad hoc sensor network applications. For such...
Shouhong Zhu, Zhiguo Ding
JCM
2008
94views more  JCM 2008»
14 years 10 months ago
Cell Site Power Characterization for Multi-rate Wireless CDMA Data Networks Using Lognormal Approximation
An analytical model is developed to solve the power-rate assignment problem for multi-rate CDMA systems and calculate the probability density function (PDF) for the downlink traffi...
Ashraf S. Hasan Mahmoud
SENSYS
2006
ACM
15 years 3 months ago
Experimental study of concurrent transmission in wireless sensor networks
We undertake a systematic experimental study of the effects of concurrent packet transmissions in low-power wireless networks. Our measurements, conducted with Mica2 motes equippe...
Dongjin Son, Bhaskar Krishnamachari, John S. Heide...