Multiplex communications – Communication over free space – Repeater
Reexamination Certificate
2011-08-23
2011-08-23
Ho, Duc C (Department: 2616)
Multiplex communications
Communication over free space
Repeater
C370S310000, C455S012100
Reexamination Certificate
active
08005035
ABSTRACT:
A method, apparatus, and system provide the ability to conduct an on-line measurement of an output multiplixer (OMUX) transfer function. A broadcast downlink signal is received from a satellite. The broadcast downlink signal is demodulated and then remodulated. The received broadcast downlink signal is then compared to the remodulated signal to estimate the OMUX transfer function of the satellite.
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Ho Duc C
The DIRECTV Group Inc.
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