Xem 1-20 trên 142 kết quả Wireless devices
  • Chapter 6 - Wireless internet and m-business. In this chapter we will discuss: Wireless devices, m-business, wireless internet access, wireless web technology, software applications for wireless devices, wireless local area networks (WLANs), bluetooth, wireless communications, location tracking, future of wireless internet.

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  • A wireless local area network (WLAN) is exactly like a regular local area network (LAN), except that each computer in the WLAN uses a wireless device to connect to the network. Computers in a WLAN share the same frequency channel and SSID, which is an identification name shared by the wireless devices belonging to the same wireless network.

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  • Wireless Networks have become ubiquitous in today's world. Millions of people use them worldwide every day at their homes, offices, and public hotspots to log on to the Internet and do both personal and professional work. Even though wireless makes life incredibly easy and gives us such great mobility, it comes with its risks. In recent times, insecure wireless networks have been exploited to break into companies, banks, and government organizations.

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  • The book addresses practical engineering issues that antenna professionals have to deal with. It explains the immediate demands for existing systems; discusses the antenna technology for the latest and emerging applications, and gives comprehensive coverage of hot topics in the wireless industry. Issues including design considerations, engineering design, measurement setup and methodology, and practical applications are all covered in depth.

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  • Over the last couple of years, manufacturers have produced some incredibly sophisticated wireless networking equipment. Consumers’ ongoing demand for low-cost, high-speed, easy-to-use networking gear has forced hardware manufacturers to continually refine their designs. Engineers have produced tiny devices that use very little power to perform amazing feats of ingenuity, producing them on such a large scale that the cost is staggeringly low.

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  • Over the past few years, many fundamental changes have taken place in wireless communications that will influence the future of this dynamic field. One phenomenon driving these changes has been the integration of wireless communicationdevices in people’s lives. While the 1990s were the years when wireless voice telephony became popular, the 2000s should be the time when wireless data applications are truly un-tethered from homes and offices.

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  • As of November 8, 2010, Manually entered IP addresses are no longer supported on campus if the device is capable of using DHCP. This is true for normal dynamically assigned IP's and Static IP's. All NEW devices added to the network must be set to receive their network address via DHCP (Dynamic Host Configuration Protocol). This is the default setting for campus PC and Mac workstations and most printers. No user action is anticipated. There is no change or downtime expected for the vast majority of campus workstations or devices. We have made great efforts to put exceptions in place...

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  • The implementation of wireless connectivity is predicated upon the definition of so-called wireless standards, of which GSM, DECT, CDPD, GPRS, and CDMA are examples [7, 8]. Each of these standards embodies the precise set of parameters that dictate the architecture and software design of wireless systems operating under the standard to effect intelligible communicationwith other systems also operating within the standard.

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  • Thank you for choosing the Linksys Wireless-N Home Router . The Wireless-N Home Router will allow you to network wirelessly better than ever, sharing Internet access, files and fun, easily and securely and with a greater range of up to four times farther than standard Wireless-G. How does the Wireless-N Home Router do all of this? A router is a device that allows access to an Internet connection over a network. With the Wireless-N Home Router, this access can be shared over the four switched ports or via the wireless broadcast....

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  • This text examines all aspects of Wireless Application Protocol (WAP), particularly the hands-on development of WAP applications - an important area with regard to the success of WAP in the consumer marketplace. The book explains both the technical details behind WAP as well as the critical business issues related to its implementation.

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  • Mobile and wireless communications applications have clear impact on improving the humanity wellbeing. From cell phones to wireless internet to home and office devices, most of the applications are converted from wired into wireless communication. Smart and advanced wireless communication environments represent the future technology and evolutionary development step in home, hospitals, industrial, and vehicular and transportation systems.

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  • Wireless communications is rapidly becoming one of the ubiquitous technological underpinnings of modern society (such as electric power, fossil fuels, automobiles, etc.). Few people think about the technology within their mobile phones, remote controls, garage door openers, GPS navigation devices, and so on. They are always at hand and reliably work for the user. Yet even within the electrical engineering (EE) community, radio communication techniques have a reputation as a “Black Art” that can only be successfully practiced by “RF people”. This is changing, albeit slowly.

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  • The increase in popularity of wireless devices has caused mobile subscribers to demand coverage anytime and anywhere. Wireless service providers are challenged with cost-effectively providing adequate coverage and capacity precisely where it is needed. This is particularly difficult in urban areas due to zoning restrictions and congestion from tall buildings that limit the placement of cell sites for additional capacity.

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  • Syngress is committed to publishing high-quality books for IT Professionals and delivering those books in media and formats that fit the demands of our customers. We are also committed to extending the utility of the book you purchase via additional materials available from our Web site.

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  • This book is about programming with J2ME on wireless devices with focus on developing games. It is assumed you have some knowledge and programming experience with J2ME and J2SE. The book does not go into detail on topics like how to make high level GUI menu but does demonstrate what a game menu might look like. Nor will it explain in detail how to use the Record Management System (RMS), but will go over topics that use RMS such as high score and game settings. As well a knowledge and experience with threading will be an asset before proceeding with...

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  • Wireless e-business allows people to communicate and transact in business via wireless technology, without physical connectivity, such as wires or cabling. Wireless e-business uses many devices, including mobile phones, pagers, palmpowered personal computers (PCs), pocket PCs, laptop computers, and other mobile devices or devices connected to the wireless networks

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  • A wireless ad-hoc network is a wireless network deployed without any infrastructure. In such a network, there is no access point or wireless router to forward messages among the computing devices. Instead, these devices depend on the ad-hoc mode of their wireless network interface cards to communicate with each other. If the nodes are within the transmission range of the wireless signal, they can send messages to each other directly. Otherwise, the nodes in between will forward the messages for them. Thus, each node is both an end system and a router simultaneously....

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  • IEEE has defined the specifications for a wireless LAN, called IEEE 802.11, which covers the physical and data link layers.

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  • Revised and completely updated, RF/Microwave Circuit Design for Wireless Applications, Second Edition is a unique, state-of-the-art guide to wireless integrated circuit design that provides researchers and engineers with a complete set of modeling, design, and implementation tools for tackling even the newest IC technologies. It emphasizes practical design solutions for high-performance devices and circuitry, incorporating ample examples of novel and clever circuits from high-profile companies.

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  • Wireless Local Loop (WLL) is projected to experience phenomenal growth over the next years. The nature of WLL is such that terminals are not mobile and once installed the subscriber expects trouble-free operation without any service requirements. Meanwhile, new functionality involving enhanced codecs and modems are being developed and expected to be made available to the subscriber. A major challenge facing WLL operators consists of upgrading WLL terminals that are already deployed at the customer site with new functionality [1,3].

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