Process and circuit arrangement for transmitting received signals from an antenna to a base station of a radio system
First Claim
1. A method for transmitting received signals from an antenna to a base station of a radio system, comprising:
- providing an antenna unit connected to the antenna;
generating an optical carrier in the base station, the optical carrier being fed to the antenna unit;
modulating the optical carrier in the antenna unit using an electro-optical modulator, in a way corresponding to received signals coming from the antenna; and
returning the modulated optical signals to the base station via the light guide.
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Accused Products
Abstract
For transmitting received signals from an antenna (A) to a base station (BS) of a radio system, optical signals, which are transmitted to the base station (BS) via a light guide (L), are generated in an antenna unit (AE) connected to the antenna (A). An optical carrier is generated in the base station (BS) and is fed to the antenna unit (AE). There, the optical carrier is modulated, using an electro-optical modulator (EO), in a way corresponding to the received signals coming from the antenna (A) and is transmitted to the base station (BS) via a light guide (L). The present invention dispenses with the need for dedicated lasers in the antenna units (AE).
114 Citations
17 Claims
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1. A method for transmitting received signals from an antenna to a base station of a radio system, comprising:
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providing an antenna unit connected to the antenna; generating an optical carrier in the base station, the optical carrier being fed to the antenna unit; modulating the optical carrier in the antenna unit using an electro-optical modulator, in a way corresponding to received signals coming from the antenna; and returning the modulated optical signals to the base station via the light guide. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A circuit arrangement for transmitting received signals from at least one antenna to a base station, comprising:
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at least one antenna unit; a base station having a laser, which generates an optical carrier that is transmitted to the antenna unit via a light guide; the antenna unit having an electro-optical modulator, which modulates the optical carrier generated in the base station in a way corresponding to received signals coming from the antenna, and returns the modulated optical carrier to the base station via the light guide. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A base station for use in transmitting received signals from an antenna to a base station of a radio system, comprising:
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a laser, which generates an optical carrier that is transmitted to an antenna unit via a light guide; wherein, the optical carrier is modulated in the antenna unit, using an electro-optical modulator, in a way corresponding to the received signals coming from the antenna and returned to the base station via a light guide. - View Dependent Claims (14)
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15. An antenna unit for use in transmitting received signals from an antenna to a base station of a radio system, comprising:
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an electro-optical modulator, which modulates an optical carrier generated in the base station in a way corresponding to received signals coming from the antenna and emits the modulated optical carrier to a light guide; wherein the modulated optical carrier is returned to the base station via a light guide. - View Dependent Claims (16, 17)
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Specification