摘要
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。
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.
出处
《光通信研究》
北大核心
2014年第5期63-65,共3页
Study on Optical Communications
基金
国家自然科学基金资助项目(61101110)
北京市属高等学校高层次人才引进与培养计划项目(CIT&TCD201304001)
北京市委组织部优秀人才项目(2012D005002000001)
北方工业大学科研人才提升计划项目(CCXZ201307)