Abstract
Optically powered radio-over-fiber remote units have been designed and
constructed for distributed antenna system applications using separate fibers
for power and signal transmission. The feasibility of this approach has been
investigated through a series of transmission measurements, based on the IEEE
802.11g wireless local area networking standard at a frequency of 2.5 GHz
using 64-QAM OFDM modulation at 54 Mb/s. These measurements show that high-quality
multilevel signal transmission is possible with modest levels of optical power
at the central unit. For example, an EVM of around 3% has been achieved for
an RF output power of 0 dBm using a central unit optical power of 250 mW over
a link length of 300 m.
© 2008 IEEE
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