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wireles network hacks mods - briere D.

briere D. wireles network hacks mods - Wiley publishing, 2005. - 387 p.
ISBN: 0-7645-9583-0
Download (direct link): wirelesnetworkhacks.pdf
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Otherwise, “It’s all wireless, baby!” as Dick Vitale would say. Among the wireless networking systems and technologies making their home in computers are the following:
Wi-Fi: The most common type of network technology is Wi-Fi, the computer wireless Ethernet networking system that we talk about in detail in Chapter 2. Wi-Fi is built into almost every new laptop computer and most new desktops today (as well as literally hundreds of millions of other devices including computer peripherals, handhelds, and more).
Chapter 1: Wireless Inside Everything!
^ Bluetooth: Another common network connection (although less prevalent than Wi-Fi) is Bluetooth, which we discuss in Chapter 2. This is a PAN (or personal area network) technology, which is designed for low-speed connections among peripherals (such as keyboards, mice, cellphones, and so on). Bluetooth is designed to take the place of all the extra cables hanging off the back of your PC. It’s already common to see wireless keyboards and mice using Bluetooth to “connect” to desktops wirelessly. In the near future, this system may very well be replaced by one or more emerging wireless technologies, such as UWB (ultra wideband) or even the proposed wireless USB system. But for today’s computers, Bluetooth is where it’s at.
Wireless WANs: There are also many wireless WANs (or wide area networks, which are networks that extend outside the home or office and cover extended territory). These network connections are usually found in mobile computers (laptop or handheld) and are designed to provide connectivity anywhere. Some of the most common (or important) of these connections include
• EV-DO: This is the high-speed variant of CDMA (code division multiple access), the wireless technology pioneered by Qualcomm for cellphones. This is the fastest wireless WAN technology in the U.S. right now, offered by Verizon and Sprint, among others.
• GPRS/EDGE: The competitor to CDMA is a European system called GSM. (Global System for Mobile is the current expansion of that acronym, although it has changed over time and taken on a life of its own.) The high-speed WAN version of GSM is GPRS (offered by Cingular in the U.S.). The next version (slightly faster than GPRS, although still slower than EV-DO) is called EDGE.
• WiMax: Competing with both of these systems is an emerging WAN technology called WiMax. When it hits the street, WiMax will replace cable and DSL modems, but in the long term, it will become a mobile technology to provide high-speed connections for anybody on the move.
In TVs
Believe it or not, wireless networks are moving to the big screen. No, not the silver screen (although there’s no reason to think that you won’t also see some sort of wireless technology in cinemas in the near future — if nothing more than some sort of antiwireless technology to shut down that annoying guy’s cellphone in the middle of the movie). We’re talking about the big screen TV in your family room!
If you’ve ever hooked up a TV, especially an HDTV, you know what a pain in the patoot it really is. Trust us on this one: We wrote HDTV For Dummies. (More importantly, we’ve tried to help relatives do this over the phone!)
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Part I: Making Your World Wireless
TVs are now being made with wireless built right in to make the hook-up process as simple as just turning everything on. The power cord is the only cable you have to worry about! The TV auto-configures with your stereo equipment and other gear in your home. Cool, huh?
Here’s how it all shakes out:
^ Wi-Fi: This is available today. Several televisions — small, portable, LCD flat panels on one end of the spectrum, and big-screen, front projector systems on the other end — have built-in Wi-Fi networks. Depending upon the system, this either provides a hookup to a base station/set-top box type of device, or it provides a PC connection. Either way, it lets you watch the tube without connecting the wires.
^ ZigBee: ZigBee is a new technology that’s not quite on the market yet, but it will hit the streets soon. (The manufacturers of the ZigBee “chips” are ramping up their production.) ZigBee is designed as a low-speed, inexpensive networking technology to replace all of today’s proprietary control systems. A ZigBee TV will be easier to control remotely, will work with any ZigBee remote, and will “play nice” with your other components.
^ UWB: This is where it really gets cool. Universal wideband will provide instant high-speed connections for your HDTV (or regular old tube) that allow you to send all of your surround sound audio, high-definition video, and even the control signals that ZigBee wants to carry. This is a big deal: The Wi-Fi that’s currently built into some TVs is iffy on its ability to carry HDTV. Technically, it should work, but in practice, it doesn’t always, so most vendors don’t support it with their products.
In A/V equipment
Just as TVs are getting the wireless treatment, so is all of the audio and video equipment that sits on the shelf next to the TVs in our entertainment centers.
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