2.3 Gbit/s DOCSIS 3.1 Downstream LDPC Decoder (PLC, NCP, Data)
Overview
Data Over Cable Service Interface Specification (DOCSIS) is an international telecommunications standard that permits the addition of high-bandwidth data transfer to an existing cable TV (CATV) system. It is employed by many cable television operators to provide Internet access over their existing hybrid fiber-coaxial infrastructure. The Creonic downstream LDPC Decoders cover PLC, NCP and Data decoding of DOCSIS 3.1.
Key Features
- Data decoder includes Zero-bit Insertion, Parity Deinterleaver, LDPC Decoder, Shortener, and BCH Decoder.
- Data decoder supports all block sizes, incl. shortening (3 to 1779 bytes).
Benefits
- Low-power and low-complexity design.
- Frame-to-frame on-the-fly configuration.
- Faster convergence due to layered LDPC decoder architectures.
- 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 statistics (decoding success indicator, average number of iterations, modified bits).
- Available for ASIC and FPGAs (Xilinx, Intel).
Applications
- Cable TV networks
- Wired transmission with high demands on forward error correction
Deliverables
- VHDL source code or synthesized netlist
- HDL simulation models e.g. for Aldec’s Riviera-PRO
- VHDL testbench
- Bit-accurate Matlab, C or C++ simulation model
- Comprehensive documentation
Technical Specifications
Availability
now