QC-SIMD-LDPC-DECODER

Universal Quasi-Cyclic SIMD-LDPC decoder supporting SSE, AVX2 and AVX512.

• Vesion: 1.2
• Date: 2019.03.06
• Author: Xu Yi

File Specification

QC-SIMD-LDPC-DECODER
│   README.md
│   LICENSE
│
└───inc
│   │   qc_simd_ldpc_decoder.h                  // Head file
│   
└───lib
│   │   libqc_simd_ldpc_decoder_x86.a           // Static library for x86 Linux
│   │   libqc_simd_ldpc_decoder_x64.a           // Static library for x64 Linux
│   │   qc_simd_ldpc_decoder_x86.lib            // Static library for x86 Windows
│   │   qc_simd_ldpc_decoder_x64.lib            // Static library for x64 Windows
│   
└───example
    └───tb_ldpc
    │   │   Makefile
    │   │
    │   └───inc
    │   │   │   nr5g_simd_ldpc_encoder.h        // 5GNR LDPC head file
    │   │
    │   └───lib
    │   │   │   libnr5g_simd_ldpc_encoder_x86.a // 5GNR LDPC Encoder Static library for x86 Linux
    │   │   │   libnr5g_simd_ldpc_encoder_x64.a // 5GNR LDPC Encoder Static library for x64 Linux
    │   │   │   nr5g_simd_ldpc_encoder_x86.lib  // 5GNR LDPC Encoder Static library for x86 Windows
    │   │   │   nr5g_simd_ldpc_encoder_x64.lib  // 5GNR LDPC Encoder Static library for x64 Windows
    │   │   
    │   └───src
    │       │   main.c                          // Example main source file
    │
    └───mex_function
        │   test.m                              // Test m file
        │   test_param.mat                      // Test parameters and data
        │   mex_qc_ldpc_decoder.mexw64          // Mex function
        │
        └───src
            │   mex_qc_ldpc_decoder.c   // interface source file

Build and Execution Instructions

Build:

cd example/tb_ldpc

make

Execution:

./main

Clean:

make clean

Performance

Environment:

• OS: Ubuntu 16.04 xenial
• Kernel: x86_64 Linux 4.4.0-21-generic
• CPU: 4x Intel Xeon Gold 6154 CPU @ 3.001GHz
• ICC: 18.0.2

Simulation Parameter:

• Base Graph: 5GNR Base Graph 1(i_LS = 2)
• Code Block Length: 8448
• Code Rate: 948/1024

Result:

SIMD	Throughput	Code Block Latency
SSE4.1	77.54Mbps	108.95μs
AVX2	145.14Mbps	58.21μs
AVX512	223.41Mbps	37.81μs