November 2007
Intermediate to advanced
736 pages
46h 32m
English
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VESTIGIAL SIDEBAND TRANSMISSION
Because of the extensive bandwidth requirements of the video signal, it is desirable to make use of a bandwidth saving technique. The signal information is fully contained in each of the two sidebands of the modulated carrier; and provided the carrier is present, one sideband may be suppressed altogether. The single sideband transmission technique can reduce the bandwidth requirement to half, viz. 5 MHz. However, it is not possible to do this in the case of a television signal because a television signal also contains very low frequencies including even the dc information. It is impossible to design a filter which will cut off the unwanted band while passing the carrier frequencies and low-frequency components ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.