IMPROVING ENERGY EFFICIENCY OF WIRELESS CAMERA NETWORKS BASED ON IEEE 802.15.4 STANDARD
In this paper is proposed a method, which helps to increase the energy efficiency of wireless camera sensor networks. The method is based on image recognition on low-power end devices of the system.
In this work it was explained why the energy balancing in a static wireless sensor networks with autonomous energy sources is actual nowadays. We presented mathematical model of static wireless sensor network which considers external influence. We presented method of energy balancing in a static wireless sensor networks with autonomous energy sources and experimental results which show increasing work efficiency of static WSN with autonomous energy sources by increasing nodes lifetime and decreasing nodes energy consumption.
In this paper development of a 2D indoor positioning system based on a wireless sensor network (WSN) technology (ZigBeePro protocol) to use for transmission power adjustable solutions is described. There was implemented real-time system with different positioning methods and algorithms: triangulation, fingerprinting, fingerprinting with K weighted nearest neighbor algorithm. There was also implemented median filter to make the raw data smoother. The important point in this study is to compare different methods for different physical areas. Experimental results in real environment showed the difference in accuracy for different methods for different areas. With the software it is possible to configure positioning system by changing weights for different nodes in K weighted nearest neighbor algorithm. The software developed for the coordinates estimation can help determination of the points in the real area with 0 m accuracy where it is possible to set up special control devices and guarantee location of the mobile device and where it is also possible to adjust transmission power after defining the position of the mobile device.
This book constitutes the refereed proceedings of the 7th International Workshop on Multiple Access Communications, MACOM 2014, held in Halmstad, Sweden, in August 2014. The 12 full papers presented were carefully reviewed and selected from 22 submissions. They describe the latest advancements in the field of multiple access communications with an emphasis on reliability issues, physical layer techniques, cognitive radio, medium access control protocols, and video coding.
This book constitutes the joint refereed proceedings of the 18th International Conference on Next Generation Wired/Wireless Advanced Networks and Systems, NEW2AN 2018, the 11th Conference on Internet of Things and Smart Spaces, ruSMART 2018.
The 64 revised full papers presented were carefully reviewed and selected from 186 submissions. The papers of NEW2AN focus on advanced wireless networking and applications; lower-layer communication enablers; novel and innovative approaches to performance and efficiency analysis of ad-hoc and machine-type systems; employed game-theoretical formulations, Markov chain models, and advanced queuing theory; grapheme and other emerging material, photonics and optics; generation and processing of signals; and business aspects. The ruSMART papers deal with fully-customized applications and services.
This book constitutes the refereed proceedings of the 12th International Conference on Parallel Computational Technologies, PCT 2018, held in Rostov-on-Don, Russia, in April 2018.
The 24 revised full papers presented were carefully reviewed and selected from 167 submissions. The papers are organized in topical sections on high performance architectures, tools and technologies; parallel numerical algorithms; supercomputer simulation.