Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Reexamination Certificate
2005-11-15
2005-11-15
Trost, William (Department: 2683)
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
C455S067160, C455S427000, C367S090000, C367S094000, C367S904000
Reexamination Certificate
active
06965753
ABSTRACT:
Apparatus for Doppler correction in a wireless communications system, including a first frequency synthesizer for generating a carrier signal oscillating at a rate responsive to a first input, a counter coupled to the first input for generating a Doppler compensation signal, the counter having a clock input, and a second frequency synthesizer coupled to the clock input for generating a clock signal oscillating at a rate responsive to a rate input. The rate input is adjusted over time according to a predetermined sequence so that the Doppler compensation signal compensates for the Doppler effect experienced by, for example, ground-to-satellite communications in a satellite communications system.
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Lorbeck Jeffrey A.
Miller David S.
D'Agosta Stephen
Ogrod Gregory G.
QUALCOMM Incorporated
Trost William
Wadsworth Philip
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