中文摘要：

一个通讯系统基于一紫外(紫外) 在 266 nm 的激光被介绍改进通讯距离。调音的脉搏频率移动(频移键控) 调整计划被学习并且改善了以便减少位错误率(BER ) ，并且在一个领域上被实行可编程的门数组(FPGA ) 。调整和解调的数学模型被建立。一个测试平台被设置在不同距离和接收装置举起角度下面测量精力密度和脉搏反应。多向方位通讯能被认识到，这被显示出，并且小点率限于 12.5 Mbit/s。 BER 被估计是不到 10 <啜class=“ a-plus-plus ”>在在 line-of-sight ( LOS )的 300 m 的距离的 7 通讯模型并且是不到 10 <啜class=“ a-plus-plus ”>在在 non-line-of-sight ( NLOS )的 80 m 的距离的 6 通讯当模特儿。

英文摘要：

A communication system based on an ultraviolet（UV） laser at 266 nm is presented to improve the communication distance. The pulse frequency-shift keying（FSK） modulation scheme is studied and improved in order to reduce the bit error rate（BER）, and is put into practice on a field programmable gate array（FPGA）. The mathematical models of the modulation and demodulation are established. A test platform is set up to measure the energy density and pulse response under different distances and receiver elevation angles. It is shown that the omnibearing communication can be realized, and the bit rate is limited to 12.5 Mbit/s. The BER is estimated to be less than 10-7 at distance of 300 m in line-of-sight（LOS） communication model and to be less than 10-6 at distance of 80 m in non-line-of-sight（NLOS） communication model.