i wrote about eight internal publications on my research about this when i was an intern at cisco systems/aironet last semester. all of them got marked 'cisco confidential', sorry. to our knowledge, there was - and still is - very little publicly available research on the topic. UNSW, Lucent, and... AT&T(i think) are the best places to go for public stuff. other companies(SMC, dlink, linksys) are all just concentrating on making a buck and not doing research, so don't look there.
given the results we got, the channel is not improved by reverse correlation in time, as the signal environment is non-symmetric; that is, it looks different from the reciever and transmitter. however, i didn't do an exhaustive study, as by then my internship was over.
i've done some work on this. this is indeed possible, though the radios on both ends need high sample rates if the communication will be recieved over short distances, which isn't practical on 802.11b cards - the sample rates are in the Gs/s range. in addition, the signal environment that 802.11b operates in is highly variable, and subject to reflective and refractive variations in power on the order of +/-3dB over 10us. Phase variations can be as large as 1000%(that is, 10 times as long as the wave itself) over the same timescale, making phase correlation and interferometrics totally useless. Something as simple as a fan running can perturb the signal environment on the other side of the building to this degree(believe me, we tried it). it might, *might* work over larger static environments like a city or a mountain range, but 802.11b isn't spec'd for that kind of range. so the short answer is, no.
as i go onto morpheus the get some more bela fleck live shows it's showing 18.1GB of files shared. this is a network that usually has into the 100's of TB(!) available.
Age of computer programming, the modern electronics and computing revolution, all associated technologies, tools, techniques, and education: ~60 years.
Age of human thought, art, philosophy, language, history, war, politics, and civilization itself: ~6000 years.
If you think you can ignore thousands of years of accumulated human experience by saying, 'just let me stay in my room and code' you're sorely wrong. Not to mention that I could never stand to talk to you for more than five minutes before dismissing you as intellectually useless. The rest of the human race feels much the same way, and will dismiss you similarly if you persist in ignorance.
To that end, I'm of the opinion that people who get both a liberal arts degree and a technical degree have the most powerful and versatile methods of thought possible. A person like this is manager, engineer, marketing, accountant, human resources, and IT department in just one person. There's nothing anyone can say or do that they don't at least know something about, and they are able to provide humanist perspectives on highly technical problems. Tell me you wouldn't want to hire this person.
Essentially, he's working on computer controlled networked solar power systems. The power management controller is refurbed AST 286 running Linux(!) and will control an automated switching and power management system for the solar panels in a community of 200 people. All people have to do is connect their rooftop panels to it(they have to be within 100m for the higher loss cable he's using) , and the system does the rest. Power redistribution, battery charging, dynamic loading, the whole deal. The whole system costs $800 -including a rack of 64 used deep cycle marine batteries - though there is an additional cost for the wiring. If there's any way to break the cycle of industrialization that destroys third world countries, this is it. Sorry no URL, though Home Power Magazine is a great place to look.
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i wrote about eight internal publications on my research about this when i was an intern at cisco systems/aironet last semester. all of them got marked 'cisco confidential', sorry. to our knowledge, there was - and still is - very little publicly available research on the topic. UNSW, Lucent, and... AT&T(i think) are the best places to go for public stuff. other companies(SMC, dlink, linksys) are all just concentrating on making a buck and not doing research, so don't look there.
given the results we got, the channel is not improved by reverse correlation in time, as the signal environment is non-symmetric; that is, it looks different from the reciever and transmitter. however, i didn't do an exhaustive study, as by then my internship was over.
i've done some work on this. this is indeed possible, though the radios on both ends need high sample rates if the communication will be recieved over short distances, which isn't practical on 802.11b cards - the sample rates are in the Gs/s range. in addition, the signal environment that 802.11b operates in is highly variable, and subject to reflective and refractive variations in power on the order of +/-3dB over 10us. Phase variations can be as large as 1000%(that is, 10 times as long as the wave itself) over the same timescale, making phase correlation and interferometrics totally useless. Something as simple as a fan running can perturb the signal environment on the other side of the building to this degree(believe me, we tried it). it might, *might* work over larger static environments like a city or a mountain range, but 802.11b isn't spec'd for that kind of range. so the short answer is, no.
as i go onto morpheus the get some more bela fleck live shows it's showing 18.1GB of files shared. this is a network that usually has into the 100's of TB(!) available.
something's going on here...
more of the same "if you have nothing to hide, then you have nothing to worry about" mantra we keep hearing, courtesy of the powers that be.
"It really doesn't have very many legitimate purposes. The purpose is to actually hide the fact that you are communicating."
actually, i still have my old 200-in-1 kit sitting in the bathroom. Hey, some people read the paper, I build half-adders...
Amen! There were a lot of one-sided battles with Barbie vs. the Robotic Death Horde in my childhood...
Age of computer programming, the modern electronics and computing revolution, all associated technologies, tools, techniques, and education: ~60 years.
Age of human thought, art, philosophy, language, history, war, politics, and civilization itself: ~6000 years.
If you think you can ignore thousands of years of accumulated human experience by saying, 'just let me stay in my room and code' you're sorely wrong. Not to mention that I could never stand to talk to you for more than five minutes before dismissing you as intellectually useless. The rest of the human race feels much the same way, and will dismiss you similarly if you persist in ignorance.
To that end, I'm of the opinion that people who get both a liberal arts degree and a technical degree have the most powerful and versatile methods of thought possible. A person like this is manager, engineer, marketing, accountant, human resources, and IT department in just one person. There's nothing anyone can say or do that they don't at least know something about, and they are able to provide humanist perspectives on highly technical problems. Tell me you wouldn't want to hire this person.
By the way, I'm looking for a job.
Essentially, he's working on computer controlled networked solar power systems. The power management controller is refurbed AST 286 running Linux(!) and will control an automated switching and power management system for the solar panels in a community of 200 people. All people have to do is connect their rooftop panels to it(they have to be within 100m for the higher loss cable he's using) , and the system does the rest. Power redistribution, battery charging, dynamic loading, the whole deal. The whole system costs $800 -including a rack of 64 used deep cycle marine batteries - though there is an additional cost for the wiring. If there's any way to break the cycle of industrialization that destroys third world countries, this is it. Sorry no URL, though Home Power Magazine is a great place to look.
Nah. It's a big meme checker.