Tesis
Análisis comparativo del desempeño de receptores ópticos coherentes y no coherentes para GFDM en redes PON.
Fecha
2018-08Registro en:
Arguero Tello, Johanna Berenice. (2018). Análisis comparativo del desempeño de receptores ópticos coherentes y no coherentes para GFDM en redes PON. Escuela Superior Politécnica de Chimborazo. Riobamba.
Autor
Arguero Tello, Johanna Berenice
Resumen
The objective was to analyse the performance of GFDM transmission using coherent and noncoherent
optical receivers, for which a transmission of a radio frequency signal over fiber was made using
GFDM signal on a passive optical network (PON) at 10 Gb/s through an OptSim-Matlab cosimulation.
The
need
to
improve
the
performance
of
future
5G
networks
will
mean
that
the
fronthaul
will
be
a
high-speed
link
implemented
over
an
optical
fiber,
to
guarantee
the
requirements
of
the
new
generation
mobile
network.
In order to satisfy user data rates higher than 10 Gb/s, with a latency less than 1 ms, one of the main
candidates is the GFDM multi-carrier scheme as a 5G waveform. The challenge is to increase the
fronthaul link capacity which depends on the combination of: the type of optical detection that is
used, the modulation formats and digital post-processing of the signal. In addition, a good option for
the transmission scheme to be used is the coherent transmission, because this substantially increases
the performance capacity of an optical network compared to schemes based on intensity modulation
and direct detection. The results obtained show an appreciable improvement in the receiver sensitivity
(around 3 dB) using a coherent detector. Within this perspective it is envisioned that the coherent
detection will allow to increase the capacity of the fronthaul optical networks. However, an important
disadvantage of the coherent transmission is its high implementation cost. Additionally, dispersion
pre-compensation and post-compensation studies could be carried out introduced in the signal by the
propagation of its in the optical fiber.