CAJ | 학술논문

在UV(紫外光)通信系统中噪声会对信号产生明显的干扰。为了改善UV系统的的通信质量,采用了一种改进的LDPC (低密度奇偶校验)码算法,并仿真了该算法在 UV 信道模型中 NLOS(非视距传播)的性能。设计了 LDPC(960,480)和 RS (18,10)编解码器平台。实验结果表明：在给定发送功率和10-6误码率的情况下,相对于未编码的系统,采用 RS(里所)编解码仅增加了42%的可靠通信距离,而采用 LDPC编解码却能增加约100%的可靠通信距离,能有效改善系统的通信性能。
재UV(자외광)통신계통중조성회대신호산생명현적간우。위료개선UV계통적적통신질량,채용료일충개진적LDPC (저밀도기우교험)마산법,병방진료해산법재 UV 신도모형중 NLOS(비시거전파)적성능。설계료 LDPC(960,480)화 RS (18,10)편해마기평태。실험결과표명：재급정발송공솔화10-6오마솔적정황하,상대우미편마적계통,채용 RS(리소)편해마부증가료42%적가고통신거리,이채용 LDPC편해마각능증가약100%적가고통신거리,능유효개선계통적통신성능。
Noises brings about obvious interferences with signals in Ultraviolet (UV)communication systems.For the purpose of improving the system communication quality,this paper implements an improved Low-Density Parity-Check (LDPC)codec algorithm and simulates its Non-Line-Of-Sight (NLOS)performances on a UV channel model.It conducts experiments on a LDPC (960,480)and RS (18,10)codec test bed.The experimental result shows that under the conditions of given power and 10-6 bit error rate,the reliable communication range increases by only 42% with RS relative to uncoded systems,but by 100%with LPDC,thus effectively improving the communication performance.