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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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We’re talking about your car. Heck, we’re even talking really big, for you SUV drivers out there. You don’t have to just talk about gizmos and gadgets when you think about wireless. Wireless truly is going everywhere!
Chapter 1: Wireless Inside Everything!
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Now, we know you’ve already got wireless network equipment in your car — no doubt, cellphones are coming with you when you drive or ride. But in fact, wireless is being built right into cars. Some cars come with cellphones built into them. They also are sporting new wireless telematics systems, such as OnStar, www.onstar.com, which connect your car to a satellite and cellphone network to provide services like remote door unlocking and accident reporting.
Telematics services are generally proprietary and not all that “open” to uses outside of their specific service plans. But some network connections that you can build into your car let you do your own thing, such as
Wi-Fi: A lot of car manufacturers are developing “connected” cars that can use Wi-Fi for a variety of information and entertainment purposes. You don’t have to wait for them, though — in Chapter 11, we talk about how to do this yourself. Imagine updating your car MP3 and video files wirelessly every time you park in the garage!
Bluetooth: In the world of Bluetooth, car manufacturers have gone beyond planning and are already offering Bluetooth-enabled cars. If you want the ultimate in integrated cellphone systems in your car, you need to go Bluetooth — you don’t even have to take your phone out of your briefcase to accept phone calls. In Chapter 11, we also talk about how you can add Bluetooth to your existing car. (Look, now we’re saving you the car payments you would incur by upgrading! WNH&M For Dummies can pay for itself in savings!)
On planes
Nope, we aren’t making this one up (although you probably won’t be installing this one yourself). Airlines, aircraft manufacturers (Boeing in particular), and networking equipment vendors have begun to install wireless hot spots in airliners. It’s not cheap (nearly $30 a flight at present), but it’s immeasurably cool. Imagine checking your e-mail, surfing the Web, or even having an iChat AV video conference at 35,000 feet!
To Wireless Infinity and Beyond!
Wireless does NOT stop here. Literally thousands of engineers worldwide are working on wireless technologies of all sorts. In this chapter, we’ve already discussed one emerging technology that’s going to make your wireless networks all the more powerful — UWB.
Part I: Making Your World Wireless
Here are a few trends that we think will make all wireless networks faster, cheaper, more reliable, and just plain better over the next few years:
^ UWB: This technology has a lot of promise, but also some challenges. The promise is to move beyond the ultra short-range “connector cable” replacement being promised for first-generation UWB systems (replacing things like the cables between a DVD player and a TV) and to extend throughout the home with super high-speed (hundreds of megabytes per second). The challenge revolves around some competing groups of technology companies — at least two different groups want to “own” the standard for UWB — and this competition is causing a Betamax versus VHS-style war. We won’t know for a while how this will turn out, but we still maintain high hopes for UWB.
^ Wireless USB: If UWB doesn’t pan out, one reason may be that the infighting between the different groups hasn’t been resolved before a working wireless USB standard has been put into place. A bunch of companies are working on this technology, which extends USB 2.0 (480 Mbps) beyond the cable and into the airwaves. If it works out, USB may beat out UWB in the battle of TLAs (three-letter acronyms).
802.11somethingnew: The 802.11 technologies (also known as Wi-Fi) are ruling the roost of wireless networks today. Hundreds of millions of Wi-Fi-enabled devices have been built in the past few years, and Wi-Fi is still going strong. Many pundits wonder, however, if the technology will be overcome by newer technologies like WiMax or UWB, with their longer range (WiMax) or higher speeds (UWB). That isn’t beyond the realm of possibility, but we have a sneaking suspicion that the next few generations of 802.11 (like the forthcoming 802.11n, which we discuss in Chapter 2) will keep the technology in its current leading position.
Software-defined radios: This isn’t a specific wireless standard or system (like Wi-Fi or UWB), but instead a really cool underlying technology. Most wireless gear today uses hardware that is purpose-built to work with one or another kind of radio signal. Software-defined radios (SDRs), however, are more general-purpose, with software allowing the same bit of radio hardware to work with completely different radio frequencies, transmission standards, data compression methods, and the like. SDR is a big focus for the defense industry, where it might reduce the huge number of radios that the military needs to load onto Hummers, tanks, planes, and ships. If you’re in the military, this will be handy — if you’re not, don’t fear, as the technology should quickly cross over to civilian wireless networking uses quickly. How could it be used? Suppose your cellphone radio worked with your cell company, Wi-Fi, Bluetooth, and other signals, depending on what application you were running.
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