Digital Radiocommunication Method and System, Particulary for Mobile Ground Stations
First Claim
1. A digital radiocommunication system, comprising:
- an antenna,one or several modems andfrequency translators,a device, external to the modems, connected firstly to at least one modem, and secondly to at least one frequency translator, said device being designed to execute mathematical processing in base band on communication signals output from the modem and/or the translator.
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Accused Products
Abstract
The invention relates to a digital radiocommunication system having an antenna, one or several modems and frequency translators. The system also has at least one device external to the modems connected firstly to at least one modem, and secondly to at least one frequency translator. This device is designed to execute mathematical processing in base band on communication signals output from the modem and/or the translator, for example such as modulation by spectrum spreading of the signal received from the modem; and demodulation by spectrum dispreading of the signal received from frequency translators. Another purpose of the invention is a signal processing method like that used in the system. The invention is applicable to satellite radiocommunication systems onboard mobile ground stations capable of communicating while in movement.
46 Citations
12 Claims
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1. A digital radiocommunication system, comprising:
- an antenna,
one or several modems and frequency translators, a device, external to the modems, connected firstly to at least one modem, and secondly to at least one frequency translator, said device being designed to execute mathematical processing in base band on communication signals output from the modem and/or the translator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- an antenna,
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8. A signal processing method for a digital radiocommunication transceiver, wherein the signal is transformed by applying:
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a mathematical processing in base band to a signal modulated in intermediate frequency received from at least one modem; a mathematical processing in base band to a signal translated into intermediate frequency received from a frequency translator. - View Dependent Claims (9, 10, 11, 12)
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Specification