摘要
This paper presents an intelligent protograph construction algorithm.Protograph LDPC codes have shown excellent error correction performance and play an important role in wireless communications.Random search or manual construction are often used to obtain a good protograph,but the efficiency is not high enough and many experience and skills are needed.In this paper,a fast searching algorithm is proposed using the convolution neural network to predict the iterative decoding thresholds of protograph LDPC codes effectively.A special input data transformation rule is applied to provide stronger generalization ability.The proposed algorithm converges faster than other algorithms.The iterative decoding threshold of the constructed protograph surpasses greedy algorithm and random search by about 0.53 dB and 0.93 dB respectively under 100 times of density evolution.Simulation results show that quasi-cyclic LDPC(QC-LDPC)codes constructed from the proposed algorithm have competitive performance compared to other papers.
基金
supported in part with the Project on the Industry Key Technologies of Jiangsu Province(No.BE2017153)
the Industry-University-Research Fund of ZTE Corporation.
作者简介
Zhiyuan Xiao,received the B.E.degree with the School of Physics from Beijing Institute of Technology,Beijing,China,in 2020.He is currently pursuing the Ph.D.degree with the School of Electronic Science and Engineering from Nanjing University,Nanjing,China.His research interests include error correcting codes(ECC),artificial intelligence(AI)and digital VLSI design;Liguang Li,was born in Guangxi,China.He received the master degree in Signals and Systems from the Southwest Jiaotong University,in 2011.He is currently working as an Algorithm pre-research engineer in ZTE corporation and State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China.His research interests include coding and information theory,digital and wireless communications,and theory and implementation of communication algorithms;Jin Xu,received the Ph.D.degree in electrical engineering from the Wuhan University,P.R.China in 2007.He is currently with ZTE Corp.and State Key Laboratory of Mobile Network and Mobile Multimedia Technology,where he is a senior engineer in the wireless pre-research team.His research interests include channel coding,waveform,modulation,multiple-access communications as well as their application in cellular mobile networks;The corresponding author:Jin Sha,is an Associate Professor in School of Electronic Science and Engineering at Nanjing University.He received his Ph.D.in Microelectronics in 2007 from Nanjing University.From 2012 to 2013,he served as a visiting professor at Stanford University.He is a senior member of IEEE.His area of research interest includes digital VLSI design,error control coding,flash memory error control and machine learning.email:shajin@nju.edu.cn。
