AMD LDPC IP for 3GPP 5G NR | AccelerComm Channel Coding Experts

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.

Features

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 AMD
Optimised for ASIC process
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)

AMD T1 Telco Accelerator card

A multi-function small form factor PCIe card that AccelerComm integrated a BBDEV/DPDK L1 offload for the LDPC processing in 5G NR. The card uses a single slot PCIe interface and is built around AMD Zynq Ultrascale + MPSoC & RFSoc. With two 25G SFP28 and x16 PCIe interfaces bifurcated into two x8 interfaces, this Board is dual slot FHHL (full-height, half-length) form factor.

Key features

AMD ZU21DR RFSoC for 5G baseband processing offload
AMD MPSOC ZU19EG for 5G O-RAN fronthaul termination
x64 bit 4GB DDR4 Memory interfaced to PL
x32 bit 2GB DDR4 Memory interfaced to PS
Two SFP28 cages for 25G
x16 PCIe interface bifurcated to two x8 interfaces to the host device through PCIe edge finger connector
x16 standard NIC card form factor (112mm x 168mm)
JTAG Connectors for Debugging

Xilinx T1 Telco card

AccelerComm Design on T1

An L1 offload commercially deployable combination of:

BBDEV/DPDK standard APIs
AMD QDMA driver for PCIe interface
FPGA netlist, including:
- QDMA channel optimization
- Interface logic
- HARQ management
- Complete 3GPP compliant code block processing with integrated SD-FEC
- Configurable SD-FEC combinations supported
This system can easily interface to compliant 5G L1 software stack and associated test environments
The SmartNIC performance can be extended by further utilizing the PCI Gen3 x16 to full capacity by applying further L1 LDPC or Polar channel coding onto the ZU19EG if fronthaul acceleration is not required
This system has been designed to provide optimal throughput and reduced latency for real world scenarios

SD-FEC decoder

AccelerComm has also partnered with AMD 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 AMD. 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.

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Whitepapers

Research, technical leadership and tutorial papers from our CTO on the latest factors influencing the future of LDPC standards.

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Software

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.