Norman Abramson‚ a professor at the University of Hawaii‚ developed the world’s first wireless computer communication network‚ ALOHAnet (operational in 1971)‚ using low-cost ham-like radios. The system included seven computers deployed over four islands to communicate with the central computer on the Oahu Island without using phone lines. Definition A wireless local area network (WLAN) links two or more devices using some wireless distribution method (typically spread-spectrum or OFDM radio)‚ and
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LOAD BALANCING ROUTING PROTOCOL ON MULTIHOP WIRELESS NETWORKS ABSTRACT A Multihop wireless Network have the potential to extend the coverage of a network which composed of mobile nodes where the two nodes can communicate through the number of intermediate nodes in wireless links. Multihop mesh networks‚ Multihop cognitive radio networks‚ sensor networks‚ iMANET‚ vanet are all the examples of Multihop wireless networks. To improve the network performance‚ Load Balancing in Routing mechanism is considerable
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Network Design: Logical and Physical Design In networking terminology‚ the term network topology refers to the entire structure of the network. There are two primary parts to the topology definition: the physical design‚ which is the actual layout of the wire (media)‚ and the logical design‚ which defines how the media is accessed by the hosts. The physical designs that are commonly used in networks are the Bus‚ Ring‚ Star‚ Extended Star‚ Hierarchical‚ and Mesh. A bus topology uses a single
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DRAWING AND ITS PROCESSES Drawing is a metalworking process which uses tensile forces to stretch metal. It is broken up into two types: sheet metal drawing and wire‚ bar‚ and tube drawing. The specific definition for sheet metal drawing is that it involves plastic deformation over a curved axis. For wire‚ bar‚ and tube drawing the starting stock is drawn through a die to reduce its diameter and increase its length. Drawing is usually done at room temperature‚ thus classified a cold working process
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The Effects of Addicting to Cyber Social Networks Social network is an addictive thing nowadays. I believe that everyone‚ start from teenagers up to old people addict to cyber social networks. Almost every single breathe‚ they update their twit‚ their statues‚ etc. If we cannot control ourselves to use this social network in the good way‚ it will not take a long time for us to get the bad impacts. There are so many bad impacts of addicting social networks. First of all‚ we will next to our far
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for the people how far apart they are. After this radio based communication systems Era started. It was an extension of wired based networks. In the beginning it was developed for some special purposes like military and police usage. With the passage of time these systems emerged to allow common peoples to communicate with each other‚ rather then using wired based network. After this the age of faster communication and capabilities of voice get started and evolved into new telecommunication system.
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decades. The wireless personal area networks (WPANs) and wireless local area networks (WPANs) are heterogeneous networks which are used in different applications. Two networks‚ called Wifi (IEEE 802.11 WLAN) and ZigBee (IEEE 802.15.4 WPAN)‚ which operates in 2.4 GHz frequency. Spectrum sharing is an effective technique which is used to enhance spectrum utilization. However the coexistence and Interoperability is a critical problem in the case of heterogeneous networks. These critical problems will lead
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February 26‚ 2013 Orange signs Nokia Siemens Networks to extend network and rollout 4G (LTE) #MWC13 Nokia Siemens Networks to provide and implement complete radio and core network Customers of Orange Communications in Switzerland can expect to enjoy superior mobile broadband with faster data speeds and improved coverage. Under a five-year agreement‚ Orange has selected Nokia Siemens Networks to extend its radio access network as well as supply and build its network to deliver 4G (LTE - long term evolution)
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high speed network and why do we need to control it. Over the past decade‚ the speed of computer and telecommunications networks has improved substantially This rapid growth in speed is expected to continue over the next decade‚ because many new applications in important areas such as data and video will demand very high network bandwidths. Each device on a network has a limited amount of memory for storing the data that travels over the network. When the amount of data on the network is excessive
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Extended Study – Comparative Texts Which techniques do J. D. Salinger and David Fincher use to explore the personal dilemmas of their protagonists‚ Holden Caulfield and Mark Zuckerberg‚ in The Catcher in the Rye and The Social Network? In David Fincher’s The Social Network and J. D. Salinger’s The Catcher in the Rye‚ a story of two young men‚ Holden Caulfield and Mark Zuckerberg face many difficulties and ultimately are very vulnerable souls. The dilemmas that Holden and Mark face are alienation
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