无线网络中的信道编码综述  

Overview of Channel Coding in Wireless Networks

作　　者：周宇翔 周华[2] ZHOU Yuxiang;ZHOU Hua(Changwang School of Honors,Nanjing University of Information Science&Technology,Nanjing 210044,China;School of Electronics and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学长望学院,江苏南京210044 [2]南京信息工程大学通信工程系,江苏南京210044

出　　处：《通信电源技术》2021年第24期123-126,共4页Telecom Power Technology

摘　　要：在无线网络中,由于没有有线通信信道,信息源和接收端之间的信息共享非常复杂,因此无线信道经常受到许多干扰的影响而导致信宿接收到错误的码字。为了检测和纠正传输数据中的错误,信道编码技术应运而生。信道编码能够在传输的数据中找出错误,并且往往有着一定的纠错能力,能够恢复出原始数据。在噪声较大的无线网络中通常需要优异的编码码字,以保证较好的传输性能。以此为基础的数据传输通常有两个过程,一个是利用映射或编码的方式将输入数据转换为信道输入序列,另一个是利用反向映射或解码以检索原始传输数据。信道编码的类型有很多,常用的有线性分组码、卷积码、Turbo码以及LDPC码等。通过对无线网络中的信道编码进行论述,旨在为相关人员提供参考。In a wireless network,because there is no wired communication channel,the information sharing between the information source and the receiver is very complicated,so the wireless channel is often affected by many interferences,resulting in the sink receiving wrong codewords.In order to detect and correct errors in the transmitted data,channel coding technology came into being.Channel coding can find errors in the transmitted data,and often has a certain error correction ability,which can restore the original data.In a noisy wireless network,an excellent coding codeword is usually required to ensure better transmission performance.Data transmission based on this usually has two processes,one is to convert the input data into the channel input sequence by means of mapping or encoding,and the other is to use reverse mapping or decoding to retrieve the original transmission data.There are many types of channel coding,commonly used linear block codes,convolutional codes,Turbo codes and LDPC codes.By discussing the channel coding in wireless network,it is intended to provide reference for related personnel.

关 键 词：信道编码 无线网络 线性分组码 卷积码 TURBO码 LDPC码 

分 类 号：TN9[电子电信—信息与通信工程]