目前LDPC码和Turbo码广泛应用于3G和4G商用移动通信系统中,并且在无线局域网、光纤通信、水下通信、视频和图象的加密以及网络安全等方面也发挥着重要的作用.由于全球在不同地区的移动通信设备只支持一种码,这使得移动通信有一定的地域局限性并影响通信质量.因此,通过对LDPC码和Turbo码译码过程的研究与结合,实现一种高性能的LDPC/Turbo码双模译码器具有重要意义.文章回顾了目前LDPC/Turbo码双模译码器的发展情况,并针对存在的不足进行分析和总结,最后介绍LDPC码和极化码未来发展的趋势.
LDPC codes and Turbo codes are widely used in the commerce of 3G and 4G mobile communication systems and play an important role in wireless LAN, optical fiber communication, underwater communication, video and image encryption and network security. Global mobile devices in different regions only support one code. Domain limitation in mobile communication affects the quality of communication. Therefore, it is very important to realize a high-performance LDPC/Turbo dual-mode decoder by combining the LDPC and Turbo codes in the decoding process. This paper reviews the development of LDPC/Turbo dual-mode decoders, analyzes and summarizes the shortcomings of the decoder, and introduces the trend of future development for LDPC and polar codes.