LDPC
3GPP compliant encoding & decoding chain

Rob Maunder, CTO - LDPC channel code for 5G new radio
Our LDPC encoding and decoding IP for the 3GPP New Radio uplink and downlink data channel includes the entire processing chain, to provide quick and easy integration and minimize the amount of extra work needed. The LDPC core uses novel layer belief propagation schedules with early termination, in order to achieve compromise-free error correction performance with high hardware efficiency.
Skip to technical resourcesFeatures
- Fully compliant with the 3GPP NR standard for PDSCH, PUSCH. Supports the full range of uncoded and encoded block sizes
- Implements the entire LDPC encoding and decoding chain in 3GPP TS38.212
- High error correction performance from LDPC decoder core
- Tightly integrates the components in the chain to reduce area usage and latency
- Simple interface, quick to integrate – all parameters are internally calculated
- FPGA support for Xilinx, Intel and Achronix
- Optimized for ASIC process
- Optimized software solution on Intel Architecture and AVX512 acceleration
- Matlab and C Models available
- Configurable parameters for power & performance optimization
- Scalable design
- Standard AXI interfaces
Functional specifics
Encoder | Decoder |
---|---|
CRC encoding | CRC decoding |
LDPC encoding (basegraph 1 and 2, all Z-values) |
LDPC encoding (basegraph 1 and 2, all Z-values) |
Rate matching (incl. repetition) | HARQ combining |
Bit-level interleaver | Filler bits insertion/removal |
Filler bits insertion/removal | Inverse Rate matching (incl. repetition) |
Bit-level de-interleaver | |
Soft-output interface (optional) | |
Re-encoded output stream (optional |
SD-FEC decoder
AccelerComm has also partnered with Xilinx to deliver all the code block chain components required to support 3GPP TS38.212 around the hardened SD-FEC LDPC decoder available with Zynq® UltraScale+™ RFSoC devices from Xilinx. It implements the entire LDPC encoding and decoding chain with superior performance and hardware efficiency.
Technical resources
Our technical resources are freely available for anyone to download. Research and innovation form an integral part of our business and we want to share this with you.
Datasheets
Detailed specification sheets for our LDPC product, including block diagrams, performance graphs and comparison tables.
View DatasheetsWhitepapers
Research, technical leadership and tutorial papers from our CTO on the latest factors influencing the future of LDPC standards.
View WhitepapersSoftware
Open source software models and evaluation code for encoder and decoder simulations for our LDPC product.
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5G NR LDPC Product Overview
Key features and benefits of our LDPC product suite for 5G New Radio Applications.
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