Chapter 3 Mobile Radio Propagation: Large-Scale Path Loss 1. (a) Explain the advantages and disadvantages of the 2-ray ground reflection model in the analysis of path loss. (b) What insight does the 2-ray model provide about large-scale path loss that was disregarded when cellular systems used very large cells? 2 .In a 2-ray ground reflected model‚ assume that must be kept below 6.261 radians for phase cancellation reasons. Assuming a receiver height of 2 m‚ and given a requirement that be less
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3G WIRELESS NETWORKS: OPPORTUNITIES‚ CHALLENGES AND COMPARISON BETWEEN 3G & 4G TECHNOLOGY By: Piyush Chandra EIILM UNIVERSITY‚ SIKKIM Email id:piyush.chandra20@gmail
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Different wireless companies such as T-Mobile‚ Sprint‚ AT&T‚ Verizon‚ and many other try to persuade you to believe that their wireless network is the best. IP networks form the backbone of worldwide digital networking. They have encouraged the merger of voice‚ data‚ and radio waves‚ which can be digitized into packets and sent via any digital network (Turban‚ Volonino). This convergence is happening on a much more global scale and is changing the way in which people‚ devices‚ and applications communicate
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April 4th‚ 2006 A Technical Report: Wireless Sensor Networks and How They Work Prepared for Ann Holms University of California Santa Barbara Prepared by Ethan Culler-Mayeno University of California Santa Barbara Abstract Wireless sensor networks are a budding technology with the potential to change the way that we live. This report explains the workings of each network as a system of tiny computers called motes and the parts of the network. Furthermore‚ this report goes on to
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local processing and wireless communication‚ a reality. Such nodes are called as sensor nodes. Each sensor node is capable of only a limited amount of processing. But when coordinated with the information from a large number of other nodes‚ they have the ability to measure a given physical environment in great detail. Thus‚ a sensor network can be described as a collection of sensor nodes which co-ordinate to perform some specific action. Unlike traditional networks‚ sensor networks depend on dense deployment
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Communications * Consumer Electronics * Control Systems * Energy Conversion * Fuzzy Systems * Industrial Electronics * Instrumentation and Measurement * Intelligent Transportation Systems * Power Electronics * Power Systems * Robotics * VLSI Systems * Wireless Communications * MicroElectroMechanical Systems * Mechatronics Bio Medical * Bio Metrics - Finger Print‚ RFID‚ Voice * Robotics * Security System * Tele Communication * Communication * Unwired Zigbee‚ RFID‚ GSM‚ RF‚ Bluetooth‚ WIFI‚ GPS * Wired
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An Efficient Node Authentication Algorithm for Wireless Sensor Network Using Public Key Cryptography and Hashing (Simulation & Algorithm) Syed Osama Meraj Department of Computer Science Mohammad Ali Jinnah University dreamzunlimited81@hotmail.com Sir. Rizwan ur Rashid Mohammad Ali Jinnah University rizwan@jinnah.edu 1.Abstract: The need for security in WSNs is unavoidable. Applications such as military‚ medical care‚ structural monitoring‚ and surveillance
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generation. It is the wireless technology that initially enabled Internet browsing over wireless networks. An example of 3G technologies is EV-DO. 4G is the generic abbreviation for 4th generation. It is the wireless technology that was designed to optimize data over wireless networks‚ improving the speed and efficiency of data delivery. LTE is one of the technologies that can be used to build a 4G network. This research will compare contrast 3G wireless networks to 4G networks. Compare
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Special Publication 800-48 Wireless Network Security Tom Karygiannis Les Owens 802.11‚ Bluetooth and Handheld Devices NIST Special Publication 800-48 Wireless Network Security 802.11‚ Bluetooth and Handheld Devices Recommendations of the National Institute of Standards and Technology Tom Karygiannis and Les Owens C O M P U T E R S E C U R I T Y Computer Security Division Information Technology Laboratory National Institute of Standards and Technology Gaithersburg‚ MD 20899-8930
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WIRELESS SENSOR NETWORK (Reshma Bhat‚ 3rd sem‚EC) Abstract A Wireless Sensor network (WSN) consists of spatially distributed autonomous sensors to cooperatively monitor physical or environmental conditions‚ such as temperature‚ sound‚ vibration‚ pressure‚ motion or pollutants. The development of wireless sensor networks was motivated by military applications such as battlefield surveillance and are now used in many industrial and civilian application areas‚ including industrial
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