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Enhanced-xVSB system development for improving ATSC terrestrial DTV transmission standard

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6 Author(s)
Sung-Hoon Kim ; Digital Broadcasting Res. Div., Electron. & Telecommun. Res. Inst., Daejon, South Korea ; Jae-young Lee ; Seung-Won Kim ; SooIn Lee
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This paper describes advanced dual stream system for improving mobile/pedestrian reception performance to the ATSC DTV 8-VSB transmission standard. E-xVSB system can transmit a mixture of normal (8-VSB) stream and enhanced (robust) stream. The robust stream has a higher threshold of visibility (TOV) compared to the standard stream, and legacy receivers ignore the robust packets. Thus, Enhanced-xVSB system is fully backward compatible with a current ATSC standard. For more robust transmission support, E-xVSB system adopts a reduced constellation method as well as enhanced trellis-coded modulation scheme. E-xVSB system supports a variety of enhanced modulation schemes: Pseudo-2VSB, Enhanced-4VSB, modified Enhanced-8VSB and Hybrid-VSB. Proposed system has been tested in the Lab, and the testing results are shown in this paper.

Published in:

IEEE Transactions on Broadcasting  (Volume:52 ,  Issue: 2 )