Higher point-to-point user data rates are certainly
feasible utilizing higher bandwidth and
WDM, as described earlier. Moreover, there is
significant potential for spatial multiplexing
using pixelated transmitters and receivers, possibly
reaching 10 Gb/s and beyond. On the other
hand, hundreds of megabits per second may be
enough for a single user nowadays. Thus, it
might be wiser to exploit the spatial multiplexing
potential to achieve higher aggregate data rates
for multiple users in a homogeneously lit large
coverage area. Note that optical bandwidth is
more easily shared than radio. Using, for example,
selective light beams, data can be directed
to one user without complex signal processing.
Optical space-division multiplexing can also
enable high-speed access for each individual user
by spatially reusing the modulation bandwidth.
While optical beam-forming has often been
demonstrated in the scientific literature [15, references
therein], further research is needed to
integrate this new technology autonomously into
optical access points and terminals..
Higher point-to-point user data rates are certainly
feasible utilizing higher bandwidth and
WDM, as described earlier. Moreover, there is
significant potential for spatial multiplexing
using pixelated transmitters and receivers, possibly
reaching 10 Gb/s and beyond. On the other
hand, hundreds of megabits per second may be
enough for a single user nowadays. Thus, it
might be wiser to exploit the spatial multiplexing
potential to achieve higher aggregate data rates
for multiple users in a homogeneously lit large
coverage area. Note that optical bandwidth is
more easily shared than radio. Using, for example,
selective light beams, data can be directed
to one user without complex signal processing.
Optical space-division multiplexing can also
enable high-speed access for each individual user
by spatially reusing the modulation bandwidth.
While optical beam-forming has often been
demonstrated in the scientific literature [15, references
therein], further research is needed to
integrate this new technology autonomously into
optical access points and terminals..
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