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 DOCSIS 3.1 LDPC decoders are a complete solution for the downstream forward error correction, i.e. PLC decoder, NCP decoder and data decoder are included.
Applications
Cable TV networks
Wired transmission with high demands on forward error correction
Features the PLC Decoder Core Supports
Soft-Decision Demapper, Derandomizer, Deinterleaver, Depuncturer, and LDPC Decoder are included.
Support for 4k and 8K FFT sizes
Support for 16-QAM modulation
Features the NCP Decoder Core Supports
Soft-Decision Demapper, Derandomizer, Deinterleaver, Depuncturer, Deshortener, and LDPC Decoder are included.
Support for 4k and 8K FFT sizes
Support for QPSK, 16-QAM, and 64-QAM modulations
Provides derandomization data for downstream data path
Features the Data Decoder Core Supports
Zero-bit Insertion, Parity Deinterleaver, LDPC Decoder, Shortener, and BCH Decoder are included.
Support for all block sizes, incl. shortening (3 to 1779 bytes)
Data rate of more than 2.3 Gbit/s
Your 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, Altera).
Deliverable includes VHDL source code or synthesized netlist, VHDL testbench, and bit-accurate Matlab, C or C++ simulation model.
