Robust MISO coherent optical GEO satellite feeder link with relaxed implementation constraints
Résumé
In this paper, we propose to study the potential advantages that multiple-input single-output (MISO) architectures could offer compared to the classical single-input single-output (SISO) approach for coherent free space optical (FSO) ground-to-GEO feeder links, highlighting their resilience to atmospheric turbulence and the benefits of spatial diversity. Evaluating system trade-offs under both power-limited and power-augmented scenarios, we demonstrate that MISO designs can achieve higher data rates and enable more robust optical feeder links. Choosing the best MISO configuration depends on system-level priorities, including available transmit power, optical and adaptive optics (AO) complexity, throughput-latency balance, and integration requirements. Our findings demonstrate that simple MISO architectures can effectively balance aperture size, AO requirements, interleaver depth, and transmit power, positioning them as a promising solution for efficient and resilient GEO optical feeder links.
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