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LDPC Encoder / Decoder

Forward Error Correction (FEC) codes such as Low Density Parity Check (LDPC) codes provide a means to control errors in data transmissions over unreliable or noisy communication channels.

Part Number:
- EF-DI-LDPC-ENC-DEC-SITE
Design Tools Support: Vivado Software
License: Core License Agreement
Device Support: Kintex 7, Kintex UltraScale, Kintex UltraScale+, Versal AI Core, Versal Prime, Virtex 7, Virtex UltraScale, Virtex UltraScale+, Zynq UltraScale+ MPSoC

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Overview
Documentation
Supported Tool Versions

Product Description

Forward Error Correction (FEC) codes such as Low Density Parity Check (LDPC) codes provide a means to control errors in data transmissions over unreliable or noisy communication channels. The LDPC Encoder/Decoder core provides an optimized block for encoding and soft-decision decoding of these codes. Custom and standardized LDPC codes are supported through the ability to specify the parity check matrix through an AXI4-Lite bus.

Key Features and Benefits

Optimized for 5G Wireless (backhaul and baseband) and DOCSIS 3.1 applications
Highly configurable codes
- A range of Quasi-Cyclic codes can be configured over an AXI4-Lite interface
- Code parameter memory can be shared across up to 128 codes
- Codes can be selected on a block-by-block basis
Normalized min-sum decoding algorithm
- Normalization factor programmable (from 0.0625 to 1 in steps of 0.0625) for layers
Number of iterations between 1 and 63
- Specified for each codeword
Early termination
- Specified for each codeword to be none, one, or both of the following:
  - Parity check passes
  - No change in hard information or parity bits since last iteration
When configured as a decoder, soft or hard outputs
- Specified for each codeword to include information and optional parity
In- or out-of-order execution of blocks, with user specified ID field to identify blocks

Resource Utilization

LDPC Encoder/Decoder Resource Utilization (Registration required)

Documentation

Vivado IP Release Notes

This article contains a list of all 'Vivado™ IP Release Notes - All IP Change Log Information' answer records and the associated Vivado Tools release.

View Release Note