Performance Analysis of Hybrid Mixed Line Rate Nyquist Super Channel Transmission of Unicast and Multicast Overlay System

Internet-based services such as email, file transfer protocols, real-time applications, and on-demand content delivery systems like Netflix exemplify unicast data transmission. Applications such as the dissemination of online class, software updates, IoT-based system control messages and connectivity for various applications, and collaborative platforms like online gaming and virtual reality environments necessitate a multicast data transmission system. This research investigates the performance of a mixed line rate combined with Nyquist transmission. This system features subcarrier-based super-channel subsystems that incorporate polarization mixed 8-Quadrature amplitude modulation (PM-8QAM) 166 Gb/s data rate and Nyquist dual polarized 16-Quadrature amplitude modulation system (Nyquist DP-16QAM). A 112 Gb/s data rate WDM super channel, combined with a 56 Gb/s POLSK-based system, creates a Unicast super channel. Eight multiple sub-carrier-based unicast super-channels are formed and blended with the Multicast system that uses differential quadrature phase shift keying (DQPSK) for 56 Gb/s multicast transmission. The system transmits 5.856 Tb/s of total data rate via 8 × 725 Gb/s unicast and 56 Gb/s multicast signals. The simulation results were used to determine the BER, input power, and Q-factor for the multicast overlay system. The results obtained showed high Q values, low BER, and great spectral efficiency across a distance of 600 Km.