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1998
Conference Paper
Titel
Optical millimeter-wave systems for broadband mobile communications, devices and techniques
Abstract
Future mobile communication systems have to meet the demands of broadband services. The 60 GHz-range is proposed for the radio link frequency in these cellular systems. The combination of optical techniques and millimeter-wave techniques at these frequencies is a promising approach for cost-effective network implementation. Besides the low-loss fiber-based data transmission, this combination allows simple millimeter-wave generation in low-cost base stations. In this paper different techniques of optical millimeter-wave generation are briefly reviewed and some experiments on the optical generation of low-phase noise millimeter-wave signals and offset quadrature phase shift keying (OQPSK) 140 Mbit/s-data transmission are reported. Quartz stable millimeter-waves at 18-20 GHz and in the 60 GHz band are remotely generated by heterodyning the signals of semiconductor lasers.
Tags
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broadband networks
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cellular radio
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optical fibre networks
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optical modulation
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optical transmitters
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quadrature phase shift keying
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radio equipment
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semiconductor lasers
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optical millimeter-wave systems
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broadband mobile communications
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devices
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techniques
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future mobile communication
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radio link frequency
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cellular systems
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cost-effective network implementation.
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low-loss fiber-based data transmissio
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millimeter-wave generation
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low-cost base stations
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optical generation
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low-phase noise millimeter-wave signals
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offset quadrature phase shift keying
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oqpsk
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quartz stable millimeter-waves
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heterodyning
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140 mbit/s
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18 to 20 GHz
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60 GHz