The common transmission convergence (ComTC) layer for Higher Speed Passive Optical Networks is defined as part of the FEC in the ITU-T G.9804.2 Recommendation.
The Creonic ITU 25G PON LDPC Encoder and Decoder support the default LDPC (17280, 14592) coding scheme, as well as the optional LDPC (17152, 14592) scheme.
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Kevin Christoffers
Director - Business Development & Sales
Product Brief
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- Passive Optical Networks (e.g. residential, business or mobile backhaul)
- Support for code rates 38/45 and 57/67
- Uncoded block size of 14592 bits
- Compliant with “Higher speed passive optical networks – Common transmission convergence layer specification, Recommended Standard, ITU-T G.9804.2, October 2021”
We are ISO 9001:2015 certified
Our customers can rely on consistently high quality, guaranteed by our certified quality management.
Key benefits of the decoder:
- Scalable solution allows for deployment on a wide range of target technologies
- Low-power and low-complexity design
- Layered LDPC decoder architecture for faster convergence behavior
- Block-to-block on-the-fly configuration
- Early stopping criterion for iterative LDPC decoder, saving a considerable amount of energy
- Optional fixed number of iterations ensuring fixed latency for blocks with the same code rate and block length
- Configurable amount of LDPC decoding iterations for trading-off throughput and error correction performance
- Collection of statistic information (number of iterations, decoding success)
Key benefits of the encoder:
- Coded throughput of 25.4 Gbit/s at a clock frequency of 300 MHz
- Low-power and low-complexity design
- Block-to-block on-the-fly configuration
- Deliverable includes VHDL source code or synthesized netlist, VHDL testbench, and bit-accurate Matlab, C or C++ simulation model
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Available for ASIC and FPGAs
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