The Bit Error Rate Performance Analysis of LDPC Code in Ultraviolet Communication System

被引：0
|
作者：
Wang, Weiwei [1 ,2 ]
Wu, Tonghua [1 ]
Yao, Gang [1 ]
Ma, Jianshe [2 ]
Su, Ping [2 ]
机构：
[1] Nan Grp Corp, State Key Lab Smart Grid Protect & Control, Nanjing 211106, Peoples R China
[2] Tsinghua Univ, Dept Precis Instrument, Beijing 100084, Peoples R China
来源：
OPTICAL DESIGN AND TESTING X | 2020年 / 11548卷
关键词：
UV communication; LDPC codes; channel coding; channel decoding; BER; NLOS case;
D O I：
10.1117/12.2573694
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We propose a scheme of ultraviolet (UV) communication system with low- density parity-check (LDPC) code. LU decomposition algorithm is adopted as the channel coding algorithm and log likelihood ratio sum-product algorithm (LLR-SPA) is adopted as the channel decoding method. In this paper, additive white gaussian noise (AWGN) model is used to simulate the influence of noise on the ultraviolet signal in the atmospheric channel and cut-complementary (CC) model is used to forecast the path loss of UV communication system. The bit error rate (BER) performance of UV communication system is studied by simulation from aspects of transmission power, photoelectric conversion efficiency, filter transmittance, transmitter and receiver elevation angle. The simulation results show that, in a non-line-of-sight (NLOS) case, the communication distance can achieve about 200m with 10(-3) BER when the transmission power is 260mW.
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页数：8
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