Principle of wireless network system The principle of wireless network system needs the tool to transmit and expand the signal or we call “Access Point” and it has PC Card. It is a LAN Card that use to connect to Access Point. It also use radio wave to transmit & expand the signal. It use frequency from 2.4 to 2.4897 GHz and it can choose the config in wireless lan. The distance of wireless connection Indoor 1) 50 meters able to speed about 1.1 Mbps 2) 80 meters able to speed about 5.5
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Multiuser SMS Based Wireless Electronic Notice Board Abstract— This is the model for displaying notices in colleges on electronic notice board by sending messages in form of SMS through mobile; it is a wireless transmission system which has very less errors and maintenance. The hardware board contains microcontroller AT89c52 at the heart of the system. The microcontroller is interfaced with GSM Modem via MAX232 level convertor. It is used to convert RS232 voltage levels to TTL voltage levels and
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What risks and safeguards are associated with wireless communication? What is “war driving” or “war flying”? Are you comfortable (or would you use) a wireless “hot spot” to do computer work? What safeguards might you use in accessing an unprotected (public) wireless communications? Are you more at risk using a wireless connection via laptop or a connection via a smart phone? Transmissions over wireless networks can be intercepted by any suitable device within the transmission radius. If a network
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Abstract The Third-Generation (3G) wireless technologies offer wireless web‚ SMS‚ MMS‚ EDGE‚ WCDMA‚ GPRS etc. 4G is a packet switched technology‚ uses bandwidth much more efficiently‚ allowing each user ’s packets to compete for available bandwidth. It solves the non-standardization problems associated with 3G. Data transfer rate will be 20 to 100 Mbps‚ which is 10 to 50 times than 3G and 10-20 times faster than ADSL. Operating frequency range will be 3 to 10 GHz and the IPv6 protocol will be
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1. Introduction Recent technological improvements have made the deployment of small‚ inexpensive‚ low-power‚ distributed devices‚ which are capable of 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
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Abstract—A telephone based wireless system for the remote operation of the home appliances is proposed. The telephone‚ acting as a remote controller‚ generates a DTMF signal corresponding to each dialed digit which is converted to a BCD code by the Telephone interface circuit. This is given as input to the transmitter module which is then used to control various home appliances through a receiver module. Data processing stages of the transmitter and receiver modules have been implemented
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Wireless network standards Avery IT/241 06/11/2011 Sherry Desbrough Wireless Network Standards When it comes to communications‚ broadcasting signals‚ and staying within guidelines governed by the FCC and the IEEE here in the United States a system of standards have been developed in order to help the communications and information industry streamline their efforts to work together instead of against each other. Some people feel this is a good practice and conductive toward
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generating point to the consumers’ end without any physical wire has yet to as a familiar and viable technology. This paper focuses on the past and future possible advancements in WPT and explaining why it has still not come into practical utility. Wireless energy transfer has been around for about a century‚ but as of yet has only found usage in things like electric toothbrush rechargers and specialty applications such as beaming solar power down from space. A simple demonstration of it can be constructed
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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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CONCEPT OF WIRELESS ELECTRICITY (Wi-Tricity) Our forefathers marveled at the invention of glowing light bulbs by Thomas Edison in 1879. However‚ to us 21st centurions‚ the light bulb is nothing out of the ordinary. When computers‚ cell phones‚ laptops‚ iPods‚ etc. were invented our antennas tweaked. Now this is what you call invention! However‚ as time’s progressing we are getting used to these devices. In fact‚ charging all these appliances has become so very cumbersome. Each appliance has its
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