Multiplexing, Digital Broadcasting methods.

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James

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Message 1537122 - Posted: 7 Jul 2014, 4:41:11 UTC
Last modified: 7 Jul 2014, 5:38:00 UTC

Hello,

I keep thinking, one day, we'll be using this kind of data transmission system, and our signals into space will start too look like the noise on space as is. Color TV, and it's original signal, was all on the same wavelength but, phase shifted for the Red, Green and Blue. This form of multiplexing, isn't used anymore but, it should remind us that digital signals could be sent multiplexed by phase. The more accurately you can pick off a signal by phase, the higher the number of phases can be incorporated, and as a result the more channels on one frequency.

But, I really believe that the future of Digital Broadcast is headed in the same direction as HyperTransport by AMD. Every pulse on a given channel will be meant for an analog to digital converter, to be converted to a word, double word or double long word. So, each pulse, could be anywhere from 8 bits to 64 bits long, and the amplitude of every wave if AM different. If FM, then it's converted by the distance between one wave an the next. Making the signal seem very random, where a receiver on any transmitted wavelength only has a Q value of less than 1 up to 1.5. Then you would have to search data, or the pulse train with a totally different algorithm.

http://archive.seti.org/news/features/unlocking-language-in-space-and-on-earth.php

"I went home that night with preprints of Brendas dolphin signal paper, and did a Zipf plot." The Zipf plot is a tool within information theory that shows the relationship between repetitive and novel units of communication within a system. Language, Doyle explains, has a characteristic Zipf slope of 45 degrees. So did the dolphin. The results astounded the astronomer, who remembers, "First I had to have a cup of tea to make sure I got the figures right, then I called Brenda!"


Searching for that 45 degree slope out of single pulses on a single bandwidth. I'm sure that even if you tested it against a written program for a computer in machine language, compiled, you'll get the same result from intelligent interactions with machines, including programming. It's just that we're on the edge of compressing transmitted information so well, that at a distance, it really might look just like the natural noise on space, and we'll move from this era of technology to the next more highly compressed.

My thing with the dolphins is presenting a Kindergarten, through the 5th grade, reading and writing teaching system for dolphins. My suggestion is a simple point/submersible touch screen for the dolphins. Eventually, we are asking them to spell, ball, fish, then get more specific, herring, smelt, anchovies, and of course, salmon. Then get them to spell it out. Move forward to grammar, while they speak their own language among themselves, we teach them enough to eventually ask them, what did you just say?

It's just an adjustable gain, analog to digital converter. Inverse Square Law, and interference from objects like buildings, doesn't make this form of processing impossible. Every few microseconds or milliseconds, it will produce a zero, or a series of zeros. Zero, is reference voltage or part of a waveform that's used to calibrate the amplifier for the analog to digital conversions. Zero, is frequent in binary, and often used as a spacer in files, usually ignored, and literally important to scaling. So, let's say you have a DC transmitter, with 30 volts negative as 0 volts, and 64 times 60 volts as peak scale for a TV transmitter. So, at peak it's 5.4KV, and tubes do that well. It would make a good loud transmitter. Zero, is black, zero is silence, and zero comes around allot.

The Flavored Coffee Guy.
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Message boards : SETI@home Science : Multiplexing, Digital Broadcasting methods.


 
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