8-VSB

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8-VSB

(8-level Vestigial SideBand) The modulation technique used for digital TV (DTV) in the U.S. It minimizes interference with analog NTSC signals, which must be transmitted simultaneously with the digital signals until 2006. NTSC uses an analog VSB modulation. See DTV. Contrast with OFDM.
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We are approaching theoretical limits of the 8VSB demodulation standard thanks to our unique implementation," said Rich Citta, chief scientist of Micronas Semiconductors, Inc., an industry veteran and one of the key architects of the current ATSC DTV standard.
"8VSB is not a great technology because it takes up a lot more space on a cable system," said Mark Hess, Comcast's rice president of digital television.
To wit, they can buy an high-definition TV set and (assuming broadcasters iron out those pesky 8VSB transmission problems) get their must-see TV live, 24 hours a day, from over-the-air broadcasting sources.