Receiver for robust data extension for 8VSB signaling

Details Receiver for robust data extension for 8VSB signaling Receiver for robust data extension for 8VSB signaling

2007-03-20

2007-03-20

Kim, Kevin (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S262000, C714S795000, C714S796000

Reexamination Certificate

active

10251650

ABSTRACT:
A robust data extension, added to a standard 8VSB digital television signal, is used to improve the performance of a digital television receiver. Robust data packets are encoded at a 1/3-trellis rate as compared to normal data packets that are encoded at a 2/3-trellis rate. In addition to delivery of robust data for mobile applications, the redundant robust data packets also improve the performance of the receiver in the normal tier of service. In particular, the robust data packets improve the performance of the receiver equalizer filter in the presence of rapidly changing transient channel conditions such as dynamic multipath for both robust data packets and normal data packets. The robust data packets improve the performance of the carrier recovery loop and the symbol timing recovery loop. Backward compatibility with existing receivers is maintained for 1) 8VSB signaling, 2) trellis encoding and decoding, 3) Reed Solomon encoding and decoding, and 4) MPEG compatibility.

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patent: WO 97/11539 (1997-03-01), None
patent: WO 02/03678 (2002-01-01), None

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