Creonic Introduces FEC IP Core Solution for SDA
Free-Space Optical OCT V3.0 Standard

Kaiserslautern, Germany, April 27, 2023 – Creonic GmbH, the leading provider of IP cores for satellite communications, today revealed its latest solution for free-space optical (FSO) communications with immediate availability. The Space Development Agency (SDA) introduced the Optical Communications Terminal (OCT) Standard V3.0 with the intention to enable interoperability between optical communication terminals where at least one endpoint is space-based.It targets space-to-space (S2S), space-to-air (S2A),space-to-maritime (S2M), and space-to-ground (S2G) applications.

The Creonic SDA OCT V3.0 Encoder is designed to generate Over-The-Air (OTA) frames in accordance with the OCT standard. These frames consist of a preamble, followed by a header and payload data, both of which are protected with a cyclic redundancy check (CRC) and forward error correction (FEC). A convolutional code protects the header while an LDPC code handles the payload data. The Creonic SDA OCT V3.0 Decoder performs the synchronization of the OTA frame and eventually processes the header with a Viterbi decoder and the payload data with an LDPC decoder. 

Both IP cores handle the required coded throughput of 2.5 Gbit/s and support code rates of 0.5, 0.67, 0.76, and 0.85 as well as the transmission of uncoded data. They are equipped with easy-to-use AXI4 Stream data and configuration interfaces for seamless integration. 

For LDPC coding, the encoder and decoder leverage the SD-FEC hard IP cores available on select AMD Xilinx Zynq UltraScale+ RFSoC devices. Additionally, FPGAs with a more favorable price-point can be supported by using Creonic\u2019s soft LDPC encoder / decoder IP core solutions. Support for Intel FPGAs is available on request.

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