Design and comparative analysis of Inter Satellite-Optical Wireless Communication (IS-OWC) for Return to Zero (RZ) & Non-Return to Zero (NRZ) modulation formats through channel diversity technique

Nirmal jothi, Santhana krishnan, Lakshmi narayanan


Inter-Satellite Optical Wireless Communication (IS-OWC) is a novel strategy for establishing an interconnection between two satellites. The IS-OWC is focused on the use of lasers rather than conventional radio and microwave structures for wireless optical communication. Optical wireless communication between satellites is being developed by integrating optical wireless communication technology and space technology. IS-OWC can connect satellites in the same orbit or different orbits. When compared to the single channel, the channel diversity strategy produces better results. The channel diversity techniques use the IS-OWC devices, in which several signal paths are available for allowing the Q factor and signal intensity, which is extended or enlarged over a large distance. In this paper, the Q factor and Bit Error Rate (BER) are reviewed with diverse modulation designs for Return to Zero (RZ) and Non-Return to Zero (NRZ) using the channel diversity technique. The simulation is conducted on opti-system-16.0 software with 32768 numbers of samples with a bit rate of 109 bits/sec. The Q factor attained a maximum in the 8-channel OWC is 19.4385, whereas the Q factor attained minimum in the 2-channel OWC is 19.4385. Moreover, the number of channels increased may develop the proficiency of minimum power inter-satellite relation. 


Optical Wireless Communication (OWC), BER, Q-factor, Return to Zero (RZ), Non-Return to Zero (NRZ).

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