vibrant Wireless Power Transmission (WPT) markets will involve the contactless charging of portable and mobile equipment‚ in particular consumer electronics and electric vehicles. Today‚ development teams worldwide are stretching the boundaries of physics using available components to create systems that are able to compete with the efficiencies of wired solutions while offering the conveniences of wire free connections. In the 1890’s famous scientist and engineer Nikola Tesla dreamt of wireless transfer
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As and when the signals are received‚ it will raise an alarm or a warning displaying the necessary message. II. COMPONENTS USED A.Zigbee Wireless Technology: Fig 1: Xbee module In earlier days the application of the wireless technology was limited mostly to simple point to point communication only replacing the cable based communication systems. The entire communication system itself became complex after the introduction
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DAB‚ DVB Wireless LANs Basic Technology IEEE 802.11a/b/g‚ .15‚ Bluetooth Wireless Transmission frequencies & regulations signals‚ antennas‚ signal propagation multiplexing‚ modulation‚ spread spectrum‚ cellular system Network Protocols Mobile IP Ad-hoc networking Routing Media Access motivation‚ SDMA‚ FDMA‚ TDMA (fixed‚ Aloha‚ CSMA‚ DAMA‚ PRMA‚ MACA‚ collision avoidance‚ polling)‚ CDMA Transport Protocols Reliable transmission Flow control Quality of Service Wireless Telecommunication
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Implementation of Security for Wireless Network R.Sridevi (Asst.Prof) Department of Computer Science PSG College of Arts & Science Coimbatore‚ TN. srinashok@gmail.com Abstract -This paper addresses the internal and the external security challenges in organizations that implements wireless networks. Distributed security is designed to provide a more secure data communication among faculty members‚ staff and students. A description of the technique used to protect and keep PC ’s up and
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4G Wireless Networks: Data and Bandwidth Improvements How much faster is 4G compared against 3G? The speed of 3G networks depends on how they are implemented. By 2010 Verizon (a CDMA network) had reached the limits of its 3G network speed in the United States. 4G networks allowed Verizon the ability to offer transmission speeds up to four times faster than its current 3G network. AT&T’s 3G network‚ however‚ is based on GSM. The GSM design left AT&T room to upgrade its current 3G speeds
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Routing in Wireless Sensor Networks: application on Fire Detection Abstract: this paper is about fire detection in building using a modified APTEEN routing protocol. Here we design a system called iFireControl which is a smart detection system for buildings‚ which is more water efficient than many current systems‚ while keeping its robustness. introduction A Wireless Sensor network (WSN) consists of spatially distributed autonomous sensors to monitor physical or environmental conditions‚
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paper by d.visalatchi Wireless Charging of Mobile Phones Using Microwaves contents: 1. abstract 2. introduction 3. transmitter design 4. receiver design 5.process of rectification 6. sensor circuitry 7. conclusion 8. references ABSTRACT : With mobile phones becoming a basic part of life‚ the recharging of mobile phone batteries has always been a problem. The mobile phones vary in their talk time and battery stand by according to their manufacturer and batteries. All these
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People and Services Marketing ’People ’ as part of the marketing mix People are the most important element of any service or experience. Services tend to be produced and consumed at the same moment‚ and aspects of the customer experience are altered to meet the ’individual needs ’ of the person consuming it. Most of us can think of a situation where the personal service offered by individuals has made or tainted a tour‚ vacation or restaurant meal. Remember‚ people buy from people that they like
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the introduction of the wireless electricity. Some parties are for it‚ as it can allow for slightly greener ways of powering devices‚ new jobs‚ and easier access. But others are against it‚ seeing the change as a threat to old ways of doing things‚ as well as a way for people to access electricity for free. Though wireless transmissions and the idea of wireless electricity have existed for quite some time‚ the actual possibility of creating usable‚ accessible wireless electricity is just now starting
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Wireless Network‚ Security and Standards With the invention of wireless network access‚ every changing 802.11 standards and wireless home network being installation in every family’s household‚ many families have so much freedom when accessing the internet‚ photos‚ music and movies. The sharing of media is a big part of everyday life but the main problem with having unlimited‚ continuous connection for sharing such media is the threats to everyday use. Simple steps should and can be taken to ensure
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