Research on Performance of Visible Light Communication Based on LDPC Code
Visible light communication (VLC) technology is a new high-speed wireless access technology,finding a appropriate channel coding scheme is one of its main research directions.This paper proposed a new scheme to construct quasi-cyclic lowdensity parity-check (QC-LDPC) code.It is proved by the simulation result that the QC-LDPC code can help to improve the BER performance of the system because there is no girth four in its parity-check matrix.Then this paper studied the decoding algorithms of QC-LDPC code and proposed an improved decoding algorithm which can decrease the complexity of decoding process by introducing the multiplicative factor.The simulation results show that the QC-LDPC code is a suitable channel code for VLC,and the improved MS decoding algorithm reduces the complexity to a large extent on the basis of ensuring the BER performance of the VLC system.
VLC channel model LDPC code improved algorithm
Yishuo Chen Yanyong Su Dong Xue Chao Dong
Communication Research Center, Harbin Institute of Technology Harbin, China
国际会议
秦皇岛
英文
1461-1465
2015-09-18（万方平台首次上网日期，不代表论文的发表时间）