Pulse or digital communications – Transmitters
Reexamination Certificate
2007-01-18
2008-12-23
Bayard, Emmanuel (Department: 2611)
Pulse or digital communications
Transmitters
C375S260000
Reexamination Certificate
active
07469019
ABSTRACT:
A method and apparatus for optimizing a system for transmitting a layered modulated signal is disclosed. The method comprises the steps of defining the system in terms of a set of system parameters, including an optimal power separation S between a power of a first modulation layer and a power of a second modulation layer and a required system carrier-to-noise ratio (CNRS), determining an optimal power separation S to minimize the error rate of a lower layer modulated signal BERL, and selecting the remaining system parameters in the set of system parameters using the determined optimal power separation S.
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Chen Ernest C.
Lin Tung-Sheng
Lindsey William C.
Santoru Joseph
Wang Weizheng
Bayard Emmanuel
The DIRECTV Group Inc.
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