Jahnke, MarekMarekJahnkePalmer, BenjaminBenjaminPalmerPerschin, LevLevPerschinStoll, EnricoEnricoStollKulau, UlfUlfKulau2025-12-152025-12-152025-1013th IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2025https://hdl.handle.net/11420/60234Light Fidelity (LiFi) for intra-satellite communication offers immense advantages like flexible AIT and reduced harness complexity. This paper presents a simulation framework for light propagation with the primary goal to optimize positioning, spatial structures and other system parameters for intra-satellite LiFi-communication architectures. Initial tests were conducted with generic scenarios, such as obstacle simulation and the alignment of transmitters and receivers. In a subsequent step, a complete 3D model of a CubeSat was integrated into the simulation. The results demonstrate that the framework is already suitable for optimizing and visualizing optical communication structures. This allows for virtual analysis, enhancing or complementing physical test setups in the early stages of development.enLiFiIntra-Satellite CommunicationSimulationOptimizationTechnology::600: TechnologyConference Paper10.1109/wisee57913.2025.11229870Conference Paper