Abstract
The increasing demand for wireless video-based interactive and multimedia
data services explains why 60-GHz millimeter-wave wireless system is a
promising candidate to provide multi-gigabit-per-second wireless services.
While attempting to generate and transmit 60 GHz signals in a wireless
system cost effectively and increase the spectral efficiency to facilitate
multi-gigabit-per-second services, this work reviews three radio-over-fiber
(RoF) systems based on optical frequency multiplication (up to 6 times) to
reduce the bandwidth requirement of optical transmitters. Additionally,
orthogonal frequency division multiplexing (OFDM) signals with multi-level
modulation formats (16 QAM) are utilized to achieve an ultrahigh data rate
of 28 Gbps within the 7-GHz license-free band and compensate for an uneven
frequency response of 60-GHz RoF systems. Negligible power penalty following
25-km standard single mode fiber (SSMF) transmission is observed, capable of
significantly extending the service range to various applications within a
building or campus.
© 2010 IEEE
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