Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Optical harmonic upconversion for microwave generation in bidirectional broadband mobile communication system



Electronics Letters 33 (1997), No.22, pp.1884-6
ISSN: 0013-5194
Journal Article
Fraunhofer HHI ()
cellular radio; microwave generation; optical harmonic generation; phase noise; quadrature phase shift keying; optical harmonic upconversion; bidirectional broadband mobile communication system; microwave signal generation; bidirectional oqpsk-transmissions; downlink data; local oscillator signal; uplink mixer; base station; 18 to 20 GHz; 140 mbit/s

Two low phase noise microwave signals in the 18-20 GHz band have been remotely generated for bidirectional 140 Mbit/s OQPSK-transmissions by applying a simple optical harmonic upconversion technique. One carrier is modulated by the downlink data and the other one serves as local oscillator signal for the uplink mixer in the base station.