Abstract
In this paper, we investigate through simulation a proposed
multi-functional optical interface incorporating an arrayed waveguide grating
(AWG) that multiplexes multiple wavelength-interleaved dense-wavelength-division-multiplexed
(DWDM) optical RF channels while simultaneously reducing intermodulation distortion
(IMD) in fiber-radio systems incorporating optical single sideband with carrier
(OSSB+C) modulation. The proposed optical interface is also able to simultaneously
support multiple baseband transmission in an integrated wireless/wired heterogeneous
access environment. We derive an analytical model and present a detailed analysis
of the proposed interface to establish the viability of its operation and
quantify performance limitations. Our results show that the proposed scheme
is not dependent on the inherent characteristics of the optical carrier and
a maximum IMD suppression of > 9 dB can be achieved. The proposed interface was also investigated
via simulation for a larger number of DWDM channels to establish the viability
and subsequently quantify the overall performance of a heterogeneous millimeter-wave
fiber-radio system with other wired-access infrastructure.
© 2008 IEEE
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