DVB-S2X Wideband BCH and LDPC Decoder

Overview

The DVB-S2X wideband decoder is a silicon-proven, scalable solution that allows for symbol rates of up to 500 Msymb/s on state-of-the-art FPGAs.

DVB-S2X is the next generation satellite transmission standard which is an extended version of its well-established predecessor DVB-S2. The new specification allows for spectral efficiency gains of up to 50% by offering lower roll-off factors, higher modulations and a finer code rate granularity compared to DVB-S2.

Key Features

Compliant with DVB-S2 and DVB-S2X
Support for decoding of BBFRAMEs
Support for ACM, CCM, and VCM
Support for short and normal frames (16 200 bits and 64 800 bits)
Support for QPSK, 8-PSK, 16-APSK, 32-APSK, 64-APSK, 128-APSK, and 256-APSK

Benefits

Validated against 3rd party DVB-S2X modulators
Based on industry-proven design for DVB-S2
Decoder contains soft-decision demapper, block deinterleaver, LDPC decoder, BCH decoder, and descrambler
Low-power and low-complexity design
Frame-to-frame on-the-fly configuration
Design-time configuration of throughput for optimal resource utilization
Faster convergence due to layered LDPC decoder architecture
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 with on-the-fly selection in ACM/VCM modes
Collection of statistics (error rates, average number of iterations, signal-to-noise ratio (SNR))
Available for ASIC and FPGAs (AMD Xilinx, Intel)
Deliverable includes VHDL source code or synthesized netlist, VHDL testbench, and bit-accurate Matlab, C or C++ simulation model

Block Diagram

Applications

Satellite communication (Digital Video Broadcasting, Interactive Services, News Gathering, Professional Services)
Nanosatellite and CubeSat devices
Applications with the highest demands on forward error correction
Applications with the need for a wide range of code rates

Deliverables

VHDL source code or netlist
HDL simulation models
VHDL testbench
Bit-accurate Matlab, C or C++ simulation model
Comprehensive documentation

Technical Specifications

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