短码长RS+LDPC级联编码器设计  

Design of short code length RS and LDPC cascade encoder

作　　者：李振 张春熹[1] 王鹏[1] 冯迪[1] LI Zhen;ZHANG Chunxi;WANG Peng;FENG Di(BeiHang University Instrument Science and Optoelectronic Engineering,Beijing 100191,China)

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《光通信技术》2018年第11期23-26,共4页Optical Communication Technology

摘　　要：室内可见光通信(VLC)系统因受噪声和多径效应的干扰,通信过程中会产生误码,可靠性得不到保证。为了解决此问题,提出了一种RS(36,18)+LDPC(576,288)的短码长级联编码方案,给出了级联编码器的具体硬件实现方法,并对编码器的功能进行了验证。仿真结果表明:所提出的级联方案误码率性能优于RS与卷积码级联,在误码率为10^(-5)时,编码增益约2d B。The indoor visible light communication （VLC） system suffers from noise and multipath effects, errors occur during communication, and reliability is not guaranteed. In order to solve this problem, a short code length concatenated coding scheme of RS （36,18）＋LDPC （576,288） is proposed. This paper gives the specific hardware implementation method of the cascaded encoder and verifies the function of the encoder. The simulation results show that the BER performance of the cascading scheme proposed in this paper is better than RS and convolutional code. When the bit error rate is 10^-5, the coding gain is about 2dB.

关 键 词：可见光通信 级联编码 RS码 LDPC码 

分 类 号：TN92[电子电信—通信与信息系统]