Pulse or digital communications – Systems using alternating or pulsating current – Antinoise or distortion
Reexamination Certificate
2007-01-09
2007-01-09
Bocure, Tesfaldet (Department: 2631)
Pulse or digital communications
Systems using alternating or pulsating current
Antinoise or distortion
C375S260000, C375S296000, C375S346000, C370S208000
Reexamination Certificate
active
11009346
ABSTRACT:
An approach is provided for minimizing co-channel interference in a communication system is disclosed. A header of a first frame is scrambled based on a first unique word. A header of a second frame is scrambled based on a second unique word. The first frame including the corresponding scrambled header and the second frame including the corresponding scrambled header are transmitted, respectively, over adjacent co-channels of the communication system. Each of the frames further includes a payload and a pilot block. The payload and the pilot block of the first frame are scrambled based on a first scrambling sequence. The payload and the pilot block of the second frame are scrambled based on a second scrambling sequence. The above arrangement is particularly suited to a digital satellite broadcast and interactive system.
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Ancken Adam Von
Lee Lin-Nan
Sun Feng-Wen
Bocure Tesfaldet
Grunebach Georgann S.
The DirecTV Group, Inc.
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