The CCSDS LDPC codec supports code rate 223/255 with coded block size of 8160 bits, which allows for a simple replacement of legacy Reed-Solomon decoders. It was designed particularly for near-earth space missions, but the excellent error correction performance makes it the ideal fit for additional high-throughput applications such as microwave or optical links.
Applications
  • Near-Earth and Deep-Space communication
  • Space link communication
  • Microwave links
  • Optical links
  • Further high-throughput applications
 
Standard Features the Core Supports
  • Block size of 8160 bits
  • Code rate 223/255 (7136/8160)
  • Compliant with “TM Synchronization and Channel Coding, Recommended Standard, CCSDS 131.0-B-2, Blue Book”
 
Your Benefits
  • Gains more than 2.5 dB compared to Reed-Solomon decoder.
  • 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.
  • Configurable amount of LDPC decoding iterations for trading-off throughput and error correction performance.
  • Collection of statistic information (number of iterations, decoding success).
  • Available for ASIC and FPGAs (Xilinx, Altera).
  • Deliverable includes VHDL source code or synthesized netlist, VHDL or SystemC testbench, and bit-accurate Matlab, C or C++ simulation model.
 
Resources
CCSDS Standard
Learn more about the CCSDS LDPC Codes.
 
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