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Wireless sensor network (WSN) is commonly used for localization applications. Through sniffing receive signal strength indicator (RSSI) in WSN system, localization and connection to access point highest RSSI can be done automatically. In this paper, we propose Raspberry-Pi (RasPi), based best access point selection method utilizing RSSI metric. The RasPi brings the advantages of a personal computer...
Recent advances in science and technology have led to facilitate monitoring the environment, collecting data, processing the sensed data, threshold-decision making process and lastly performing of suitable actions by using of distributed wireless sensor network and actor network. Wireless sensor actor network (WSAN) composed of a combination of at least one coordinator node with sensors and actor...
Wireless sensor actor network (WSAN) adverts to the combination of mainly one coordinator node with two types of network nodes: sensors and actor nodes that communicate wirelessly to perform allotted sensing, monitoring and actuation chores. To provide effective and reliable WSAN performance, the coordinator node of a WSAN must be able to administrate the network, sensing nodes and synchronize the...
Camera-based surveillance is an important technology to monitor people, assets and places, for the applications of increasing physical security. Access to information services whilst on the move is becoming increasingly prevalent within transport systems. This paper examines motorway vehicles equipped with wireless communication nodes to obtain images from the cameras distributed along a motorway...
In recent years, there have been a number of reported studies on the design of communication protocols using simulation platform. However, most of the reported works were evaluated using simple or idealistic wireless communication channel modeling. Experimental results have shown that the characterization and modeling of wireless communication channel is important to achieve a successful implementation...
This paper presents a preliminary study to obtain the propagation characteristics for IEEE 802.15.4 Low Rate-Wireless Personal Area Network (LR-WPAN). Two units of Wireless Sensor Networks Nodes (WSNs) were used in this study. Data collection was performed at a wide outdoor area with the nodes being positioned in a vertical and horizontal positions. For each position, the received powers were measured...
As devices in sensor network are energy limited so energy efficiency is the most critical parts of this network. To have energy efficient network, efficient routing plays very important role. In this paper, an energy efficient modified hybrid adaptive intra cluster routing is proposed which provides best solution for the problem offered by traditional and simple adaptive routing algorithms. Quantitative...
An investigative design of a circular microstrip antenna (CMSA) and its related geometry intended for 5850–7075 MHz Malaysia HAPS operating band is presented. The structure consists of three layers, with the radiator at the top (layer three), a feed on the middle layer (layer two) and finally a grounding copper plate at the bottom (layer one). A commercial microwave laminate with permittivity ∊r =...
Telemedicine services are increasingly utilized by patients, clinicians, and institutions. In this paper we describe the design and implementation of wireless-enabled telemedicine system using Bluetooth. Our proposed system will provide doctors with the ability to monitor, diagnose and help their patients in case of emergencies remotely over the Internet. The system is capable of receiving a serial...
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