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60 GHz system architectures with Radio over Fiber (RoF) transport and integrated transmitters/receivers provide a comprehensive solution for future mobile systems. Since 60 GHz communication relies on line-of-sight (LoS) conditions and narrow-beam antennas to compensate the high path-loss, it has limitations in terms of coverage for multiple user locations. In this paper, performance analysis of a...
Transmission at 60GHz millimetre wavelengths is often prone to strong signal attenuations and disconnections when-ever objects greater than the wavelength of the propagating signal interrupts the line-of-sight. When this occurs, the network becomes unreliable and its performance is severely affected by unexpected and frequent disconnections, loss of data, retransmissions, waste resources and increased...
A highly integrated 5.8 GHz transceiver capable of supporting multiple data rates has been designed in 0.18 um SiGe BiCMOS for digital cordless phones and streaming audio applications. It also has a clock data recovery (CDR) circuit which can be supplied to baseband chips in conjunction with the digital received data. The transmitter with an integrated power amplifier consumes 185 mA achieving an...
We describe an innovative polarization-based optical fibre physical layer cryptography technique capable of highly secure data transmission over amplified optical links. It offers completely opaque communication over trans-oceanic distances, gigabit date rates and multiple wavelengths.
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