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Item type:Publication, Access status: without files , Optical simulation framework for spatial optimization and channel characterization in intra-satellite LiFi systemsLight Fidelity (LiFi) for intra-satellite communication offers significant advantages, including flexible Assembly, Integration and Testing Phase (AIT) and reduced harness complexity. This paper presents a simulation framework for light propagation, primarily aimed at optimizing positioning, spatial structures, and system parameters for intra-satellite LiFi architectures. Initial simulations included generic scenarios such as obstacle simulation and transmitter–receiver alignment, followed by integration of a complete 3D CubeSat model. Results demonstrate the framework’s capability to support the optimization and visualization of optical communication structures, enabling virtual analysis that complements physical test setups in early development stages. The framework has been extended to incorporate diffuse reflection and simple wavelength-independent refraction, while supporting iterative reuse of simulation results and channel characteristics enabling iterative transmitter and receiver placement optimization.Publicationtype: Journal Article6 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Implementation and evaluation of CSBM for intra-satellite communication with cuboid-based signal-space generated symbolsLiFi for intra-satellite communication offers immense advantages like flexible AIT or reduced complexity (harness). However, high bandwidths and redundancies are equally required. Modulation methods that make use of the broad spectrum of light are (Color Space Based Modulations (CSBMs)). However, this requires precise knowledge of the transceivers and environments, as previous methods usually map to the CIE 1931 color scheme. But for intra-satellite communication, various assumptions can be made that favor the use of CSBM within the satellite. This paper presents an automated procedure that generates the symbols for CSBM. In order to ensure high reliability while using the entire color space for the symbols, a method based on cuboids is presented, which guarantees an overlap-free mapping between Transmit- and Signal-Space. In addition, the implementation of a Receiver based on an Field Programmable Gate Array (FPGA) is presented and real world measurements are conducted in detail to show the automatic symbol generation and the evaluation of symbol detection capabilities for communication.Publicationtype: Journal Article10 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Light simulation framework for the optimization of spatial structures for intra-satellite LiFi-communicationLight 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.Publicationtype: Conference Paper25 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , SatelLight: wireless LiFi CAN intra-satellite communication in a realistic nano-satellite model(International Astronautical Federation (IAF), 2025-09); ; ; Publicationtype: Conference Paper16 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Development and Evaluation of a LiFi-Transceiver Module for TMTC Intra-Satellite Communication †(Multidisciplinary Digital Publishing Institute (MDPI), 2025-03-10); 20 48 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Wireless Intra-Satellite LiFi Dual CAN Bus Networks for Redundancy and Throughput(2025); ; ; The SatelLight project focuses on the development of wireless Light Fidelity (LiFi) for nano-satellite intra-satellite communication. LiFi can provide several advantages over physical or wireless radio-spectrum based communication including a reduction in harness mass, improved reliability by removing connectors, immunity to electromagnetic interference, enhanced protection against eavesdropping, and powering of low power sensors. As part of the SatelLight project a LiFi transceiver has been developed that functions in low levels of ambient light and supports the Controller Area Network (CAN) and Universal Asynchronous Receiver Transmitter (UART) protocols. This transceiver has been shown to support communication between groups of nodes using CAN of up to 4 nodes over distances of 12 cm between each node at a baud rate of 1 Mbit s-1 and using UART at distances of up to 30 cm at baud rates of 4 Mbit s-1. However, in real world satellite bus networks, redundancy is a vital requirement for most if not all space missions. This paper presents a redundant wireless intra-satellite LiFi CAN network. The network is composed of two independent CAN physical layers transmitting on different wavelengths of light. Each physical layer is implemented as a set of LiFi transceivers where each node in the network is connected to two transceivers. This allows for the redundancy concept to be configured on the fly. The redundancy can be configured as a dual network where both networks are communicating concurrently which increases the throughput of the network. It can also be configured as a cold redundant network where only one physical layer is communicating at a time. This can also be used as a power saving method where network throughput can be reduced to conserve the power consumed by the transceivers. In addition, this can be configured on a per-node basis where high priority nodes use the dual physical layers while other nodes only use a single physical layer. The results presented in this paper show the distances and error rates are the same when only a single wavelength is transmitted or multiple wavelengths are transmitted. It also includes power measurements showing the power required for each physical layer and the trade-off between power usage and network throughput.Publicationtype: Conference Paper19 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Cuboid-based signal-space symbol generation for intra-satellite communicationLiFi for intra-satellite communication offers immense advantages like flexible AIT or reduced complexity (harness). However, high bandwidths and redundancies are equally required. Modulation methods that make use of the broad spectrum of light are Color Space Based Modulations (CSBMs). However, this requires precise knowledge of the transceivers and environments, as previous methods usually map to the CIE 1931 color scheme. But for intra-satellite communication, various assumptions can be made that favor the use of CSBM within the satellite. This paper presents an automated procedure that generates the symbols for CSBM. In order to ensure high reliability while using the entire color space for the symbols, a method based on cuboids is presented, which guarantees an overlap-free mapping between Transmit- and Signal-Space. Finally, a feasibility study including real word measurements shows how symbols can be generated automatically.Publicationtype: Conference Paper19 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Demo abstract: SatelLight - using LiFi for Intra-Satellite communicationIn this demo paper the recently started project SatelLight is introduced at an early stage. SatelLight utilizes LiFi (Light Fidelity) as a novel approach for intra-satellite communication. In future, satellite harness (physical connection of the internal components) can be reduced, immune to internal and external EMC interference and possible fully autonomous operation of components can be enabled. In addition to the presentation of the project scope, this demo paper presents a first LiFi-Transceiver prototype, which will be used for reliable data transmission in the further course of the project.Publicationtype: Conference Paper9 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Performance Evaluation of PicoRV32 RISC-V Softcore for Resource-Constrained Devices(2023); ; In this paper, an extensive analysis of the resource-efficient PicoRV32 softcore, which implements the RISC-V instruction set, is performed. The focus of the analysis is on performance, energy efficiency and resource utilization. For this, both CoreMark and Embench are implemented as benchmark tools.In contrast to previous evaluations, a resource-constrained target platform (Low Power (LP) FPGA) is explicitly used for the evaluation, to demonstrate the applicability on very small embedded systems. Furthermore, all configurations of the softcore are investigated, which helps in the estimation and subsequent configuration of the softcore and reveals significant bottlenecks like memory interface.Publicationtype: Conference Paper219