光电技术应用, 2014, 29 (3): 21, 网络出版: 2014-07-18
紫外光通信调制方式的对比研究
Research on Modulation Mode Contrast of Ultraviolet Communication
紫外光通信 调制方式 UV communication modulation mode PPM pulse position modulation (PPM) differential pulse position modulation (DPPM) DPPM digital pulse interval modulation (DPIM) DPIM
摘要
紫外光非视距通信是一种新型的无线光通讯形式, 近年来受到各**强国越来越广泛的关注。详细分析了启闭键控调制(OOK)、脉冲位置调制(PPM)、差分脉冲位置调制(DPPM)和数字脉冲间隔调制(DPIM)的编码结构, 然后从带宽需求、平均发射功率、传输容量和差错性能等方面对各种调制方式进行了仿真对比。结果表明, DPIM调制比PPM具有更高的传输容量和更少的带宽需求, 并且解调对同步要求较低, 实现更简易, 并结合紫外LED阵列将作为今后实用化紫外光源的发展趋势, DPIM调制在未来紫外光通信系统的应用中将具有更大的优势。
Abstract
The encoding structures of on-off keying (OOK), pulse position modulation (PPM), differential pulse position modulation (DPPM) and digital pulse interval modulation (DPIM) are analyzed in detail. And modulation modes are simulated and compared from bandwidth requirements, average transmission power, transmission capacity and error performance. The results show that DPIM has higher transmission capacity, less bandwidth requirements, lower synchronous requirements at the condition of demodulating and easier to be realized comparing with PPM. And with UV LED array, it will be the development trends of applicable UV light source. DPIM has more advantages?in the?application of?UV communication system?in the future.
马宁, 李晓毅, 陆鸢, 杨刚. 紫外光通信调制方式的对比研究[J]. 光电技术应用, 2014, 29(3): 21. MA Ning, LI Xiao-yi, LU Yuan, YANG gang. Research on Modulation Mode Contrast of Ultraviolet Communication[J]. Electro-Optic Technology Application, 2014, 29(3): 21.