Maximizing the Area Spanned by the Optical SNR of the 5G Using Digital Modulators and Filters
Guruviah
Karpagarajesh and Helen Anita
Department
of Electronics and Communication, Government College of Engineering Tirunelveli,
India
Abstract: High
security data link channels having more immunity against channel noise is the
need of the century. Free Space Optical communication (FSO) is the modern
technology which kick-starts it’s application in inter satellite communication,
underwater communication and mobile communication to the next level of data
transmission by means of complete utilisation of the allocated frequency
spectrum. In Europe and Asian countries, 5G optical communication will going to
expand its usage to nearly 50% in upcoming years and so bandwidth and power
efficiency has to be enhanced as much as possible since the consumption rate of
the users is increasing exponentially. But increasing the distance increases
the attenuation in case of severe atmospheric weather condition. In this paper,
5G data rate of 50Gbps is ensured for better signal reception with maximum
possible link distance between the sender and the receiver keeping variable
attenuation environment. The frequency of operation is 1550nm throughout the
processes. In this work, several digital modulation techniques and optical
filters for receiver are designed and simulated. The better resulting modulator
and filter design in terms of high Quality factor and low bit error rate are
considered and is integrated with each other. The Signal to Noise Ratio (SNR)
and optical SNR are calculated for the integrated design theoretically. Higher
the SNR less will be BER and hence the signal connectivity can be improved in
the high speed free space optical communication systems.
Keywords: Free
space optics, 5G data transmission, signal to noise ratio, bit error rate,
quality factor.
Received December 17, 2019; accepted June
15, 2020