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US 2019/0173515 A1Published application
Synchronized cpdma (code phase division multiple access)
AssigneeHigher Ground LLC
InventorsShmuel Shaffer, Bruce Leonard McKinley, Scott A. McDermott
Life of this patent
Estimating the term…
Abstract
A communications protocol in accordance with one exemplary embodiment uses information from GPS satellites to synchronize the phases of transmitters, and aligns the phase with a spreading code used to de-spread the received signals at, for example, a ground station.
Claims17
1-20. (canceled)
A communications system comprising:
- a location determining module and connected GPS receiver that identify a location of one or more of a terminal and a geostationary communications satellite;
- and
- an alignment module, the alignment module at least in communication with and at least using information corresponding to the determined location from the location determining module to align arrival code-phases of signals for a ground station receiver by altering a clock for a modulated signal transmitted from the terminal.
A communications method for a communications terminal comprising:
- determining a location of one or more of the communications terminal and a geostationary communications satellite;
- using information corresponding to the determined location to align arrival code-phases of signals at a ground station receiver;
- and
- determining an alignment time and aligning a code-phase of a spreading code on a clock tick boundary for a signal transmitted from the terminal.
1 more element
A communications system comprising:
- an alignment module, processor and connected memory that at least use location information for a terminal, a ground station, and a geostationary communications satellite to align modulation and demodulation codes, or spreading and de-spreading codes, for a signal transmitted from the terminal to the ground station receiver via the geostationary communications satellite.
Dependencies are inferred from the claim text.