High speed inter-satellite optical wireless communication networks incorporating advance modulation format

Abstract

Inter-satellite optical wireless communication (IS-OWC) is one of the revolutionary techniques that can be used to transmit the high-speed data between satellites to accomplish space communication. However, speed and transmission distances of Is- OWC system is limited by space turbulences particularly pointing losses at transmitter as well as receiver side. The main intention of this thesis is to explore utilization of advance modulation format particularly alternate mark inversion (AMI) for implementation of high speed IS-OWC communication system with longer transmission distances which is carried out in three phases. In the first phase, extensive literature review is completed to find the gaps and existing techniques in IS-OWC systems. The second part covers implementation of AMI based IS-OWC system in conjunction with polarization interleaving (PI) scheme and wavelength division multiplexing (WDM) scheme, which has capability to transmit 160 Gbps up-to 5000 km under no space turbulences with acceptable signal to noise ratio (SNR), bit error rate (BER) and eye diagrams. The third part covers the evaluation of proposed AMI-IS-OWC system under the influence of space turbulences particularly transmitting pointing error and receiving pointing error. The reported results show improvement in IS-OWC system as compared to previous systems in terms of capacity as well as distance.