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Nowadays location estimation using WiFi networks in indoor environments has become a hot research topic. Challenging methods without calibration or hardware integration are essentially required for cost-effective and practical solutions. The Received Signal Strength Indicator-based localization methods offer low cost solutions. However, their propagation models are difficult to characterize due to...
Mobile devices are common and mobile internet access is increasingly possible everywhere in daily life of modern people. Commonly used mobile operating systems are Android, iOS and Windows. Android stands out with its open source nature and working capabilities on inexpensive mobile devices. Real-time location tracking is continuously monitoring a vehicle or a person by using obtained coordinates...
WMSNs carry heterogeneous traffic with different urgency and Qquality of Sservice (QoS) requirements. While the need to minimize the energy consumption is important in wireless sensor networksWSNs, offering QoS support for especially real-time multimedia transmission is a challenging issue due to resource constrained nature structure of sensor nodes, unreliable wireless links and unpredictable environmentals...
This paper presents a BLUE-based (Best Linear Unbiased Estimator) real-time localization estimation approach using indoor Received Signal Strength Indicator (RSSI) measurements, its Android based mobile application and real experimental results. Location estimation and monitoring have recently become very popular research topics using WiFi networks for indoor environments. Differing from its counterparts...
Wireless Multimedia Sensor Networks (WMSNs) have recently attracted more attention and have contributed to new potential wireless sensor network (WSN) applications such as border surveillance, battlefield monitoring, target detection, target tracking and habitat monitoring. WMSNs carry heterogeneous traffic with different urgency and quality of service (QoS) requirements. While the need to minimize...
This paper presents a modified sectoral sweeper based localization estimation (SSLE) method which is improved version of our previously proposed SSLE technique and it's modeling in OPNET. Simplified message formats are required by this technique. Only a central node estimates locations of sensor nodes, which needs to have smart antenna processing capability. The modified SSLE is modeled using OPNET...
Location information along with sensed data is important for most of the applications in wireless sensor networks (WSNs). This paper presents a modified sectoral sweeper based localization estimation (SSLE) method which is improved version of our previously studied SSLE method and it's modeling in OPNET. This technique requires simplified message formats. Only a central node which needs to have smart...
A Wireless Sensor Network (WSN) link layer security protocol called WSNSec is proposed in this paper. The effective usage of limited sensor node resources is of high importance in WSN security protocol design and implementation. In addition, research on increased security for the WSNs employed in especially military and health areas recently receives a remarkable attention as primarily focused on...
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