Wireless and mobile resource links

"In this White Paper (available in Adobe PDF format), TI's William Carney and Yoram Solomon discuss the dynamic forces driving a multimode WLAN environment. The Evolution of WLAN standards and their associated variables (cost, transmission speeds, power consumption and range) are presented, along with a discussion of the various market segments (enterprise, hot spots/public access, home and embedded) and their distinct demands and requirements. The implications for WLAN manufacturers are also discussed."

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News and tips related to the Apple AirPort networking system and other wireless uses of the Mac OS.

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"BLAST is an extraordinarily bandwidth-efficient approach to wireless communication which takes advantage of the spatial dimension by transmitting and detecting a number of independent co-channel data streams using multiple, essentially co-located, antennas. The central paradigm behind BLAST is the exploitation, rather than the mitigation, of multipath effects in order to achieve very high spectral efficiencies (bits/sec/Hz), significantly higher than are possible when multipath is viewed as an adversary rather than an ally."

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"Learn how to build a custom wireless bridge on Linux that's flexible and customizible. Wireless programmer Peter Seebach discusses the hardware, software, and security of it all." From IBM developerWorks.

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Industry group.

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"This paper does NOT advocate the use of 802.11b over 802.11a or vice versa, NOR does it provide a market analysis or economic speculation on the growth of the wireless LAN industry. However, this paper DOES factually inform the reader as to how the 802.11a and 802.11b standards compare to one another and additionally to provides detailed information on 802.11a." By Linksys.

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Article that provides both a how-to and an explanation of ZigBee, a protocol for personal area and home networks. RFDesign, 11/1/04.

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"Analytical tools required to determine the number of users (clients) that can be accommodated by an 802.11 wireless access point (AP) in a wireless LAN (WLAN) deployment." White paper from Bandspeed. Requires free registration.

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ClientLogic white paper that looks at the issues faced by carriers in getting ready for wireless local number portability. In PDF.

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"This paper explains the economic arguments in favor of allocating additional dedicated unlicensed spectrum in the lower frequency bands below 3GHz." By William Lehr, MIT. In PDF.

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Michael Juntao Yuan's site for news, tutorials and opinion related to J2ME technologies in enterprise mobile applications.

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Daily e-mail newsletter on the wireless and mobility industries.

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"An overview of wireless LAN architecture and its effect on security, mobility and deployment." From Aruba Networks.

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Looks at the differences in Ethernet at the PHY layer and MAC sublayer betweeen wired and wireless LANs.

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"In this White Paper, TI's Paul Struhsaker offers an overview of VoIP over WLAN applications, shows that the technology exists today to implement VoIP over WLAN applications as an integral part of next-generation seamless wireless voice/data networks, and explains a number of critical deployment issues."

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"Setting up a wireless Internet Service provider (WISP) for your office or neighborhood doesn't have to be a taxing or expensive ordeal. If you build your network from easy-to-buy equipment and use Linux, you can use the power of shell scripts to make network management easy. This article gives you the tips and scripts you need."

Platform(s): Linux.

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A open-source resource collection for, and by, Linux users working with wireless LANs.

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"If you want to spiff up your mobile device performance, let Michael teach you not only how to write a J2ME application that communicates with DB2, but how to optimize its development time. You'll also look over other design models that should be employed for better mobile device optimization. In addition, you'll be introduced to the new technologies in MIDP 2.0 -- specifically SMS messaging and how it relates to the future of mobile device applications." By Michael Abernathy, an IBM Java consultant.

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Introductions to GSM, TDMA and CDMA, with a look at the debate over standards. From the Wireless Developers Network.

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Links to tutorials, events and papers on Orthogonal Frequency Division Multiplexing.

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An essay by Clay Shirky on why he thinks 3G could ultimately fall by the wayside of 802.11 networks: Pricing. 03/28/03.

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Report from a January, 2003 symposium at the Harvard Business School: "Computers are quickly being absorbed into the fabric of our lives. A Cyberposium 2003 panel looks at new markets made possible by pervasive computing. Just one question: Who is going to change all those batteries?"

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"An introductory tutorial on the different indoor propagation models commonly used to predict the propagation environment for indoor wireless LANs (WLANs)." From Bandspeed. Requires free registration.

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New York-based advocacy group: "Our mission is to promote open access to the Internet for the benefit of all people and to gain understanding into how the adoption of Internet technologies such as 802.11b can increase the benefits of access thru pervasive connectivity."

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D-Link, Belkin top our early wireless tests. Network World, 05/12/03.

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Network World analyzes several products: The AirMagnet products have a decidedly strong focus on WLAN specifics and stood out from the tough competition. The Sniffer PDA was stronger than its notebook counterpart, if only for its forced focus on WLAN specifics. Network World, 04/14/03.

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Papers on" RFID Malware: RFID exploits, RFID worms, and RFID viruses."

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Reviews of wireless routers, cards and other devices for small wireless LANs.

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"The Spectrum Policy Task Force will assist the Federal Communications Commission in identifying and evaluating changes in spectrum policy that will increase the public benefits derived from the use of the radio spectrum."

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Weblog: "Covers the latest news on texting or short messaging (SMS) and multimedia messaging (MMS)."

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Weekly e-mail newsletter on 802.11 wireless LANs.

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Kevin Werbach's technology Weblog, with an emphasis on wireless technologies and issues, in particular, innovative uses of the spectrum.

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Directory of free Wi-Fi hot spots across the U.S.

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Weblog with daily notes and comments on 802.11 networking.

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Some thoughts on computing the true costs of wireless networks from Phil Windley, former CIO of the state of Utah.

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A searchable database of Wi-Fi hot spots around the world.

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"Wireless bridging, i.e. connecting two wired networks via a wireless link has gotten to be a very confusing subject. In this Need to Know, we're going to try to untangle the mess that wireless networking companies have made of this product area, help you choose the right products for your application, and show you how to set them up properly."

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Tutorials and forums on building wireless applications.

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From the Wi-Fi Alliance: For a company that is considering enabling some portion of their employees with wireless LAN, the WLAN Benefits Calculator is a tool that addresses the question: What will be my return on investment if I make an investment in WLAN technology? The tool is built using Microsoft Excel and calculates ROI based on the productivity gains associated with increased access to the corporate network.

The spreadsheet is designed for flexibility and allows for simple changes to the parameters that describe the customer's environment and immediate results that show the consequences of those parameter changes. For gains associated with increased access to the corporate network, one needs to characterize the customer in terms of number of employees, percentage being considered for wireless, their average burdened salaries, percent of time spent in meetings, percent of time spent traveling with access to public WLAN, costs associated with installing WLAN, etc. Results are then presented in terms of dollars savings, or payback in months, relative to the upfront costs for installation and hardware and the recurring costs for IT support for the WLAN.

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"An analysis of the difficulties associated with growing a wireless LAN (WLAN) using the available approaches with conventional omni-directional access points." By Bandspeed, which makes wireless switches. Requires free registration.

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We've compiled the largest buyer's guide ever on wireless LAN equipment. Whether you're looking for an access point, PC Card or trying to decide between 802.11a, b or g, take a look at the information that vendors have provided us.

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"Wireless technologies help increase employee productivity and mobility, because employees can get information when and where they need it. Unfortunately, many IT departments' skill sets lie within wired networking, and poor design and implementation can severely impact the utility and security of the wireless network. Successful implementation of a wireless network requires understanding exactly what problems the wireless network is to solve and a solid implementation plan.

"This paper targets IT managers and staff involved in designing and deploying a wireless network. It offers a step-by-step guide to implementing a wireless solution on your campus or office environment."
From Hill Associates.

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Weblog: Weekly comments on wireless products and technologies by Network World Senior Editor John Cox.

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Reviews of wireless routers and other devices by Network World.

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Wi-Fi resource links aimed at WLAN administrators - manufaturers, advisories, organizations, software, etc.

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Links to wireless news and press releases.

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Latest wireless and mobile news, analysis and newsletters from Network World Fusion.

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Wireless and PDA news, opinions and reviews.

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Database of wireless ISPs in the U.S.

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Weblog: Latest news and links for the wireless ISP market.

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Wi-Fi Alliance guide for wireless ISPs on developing systems to let their users roam. In PDF.

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"For a company that is considering enabling some portion of their employees with wireless LAN, the WLAN Benefits Calculator is a tool that addresses the question: What will be my return on investment if I make an investment in WLAN technology? The tool is built using Microsoft Excel and calculates ROI based on the productivity gains associated with increased access to the corporate network."

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Vendor group looking to boost wireless bandwidth to as much as 100M bit/sec through the use of MIMO.

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"The ZigBee Alliance is an association of companies working together to enable reliable, cost-effective, low-power, wirelessly networked, monitoring and control products based on an open global standard."

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"Five years ago, the ZigBee short-range wireless communications standard might have been hawked as a magic key that could unlock the wonders of pervasive computing, a dream of a future in which devices and appliances anticipate their users’ every need. In today’s more careful atmosphere, however, its developers are wisely focusing on a smaller, more attainable goal: letting builders and homeowners cheaply install portable light switches, thermostats, and security systems. If ZigBee wins big in this lighting and control space, however, it may well go on to play a major role in product tracking, medical monitoring, and industrial sensor networks." Technology Review, 08/19/04.

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