摘要
大气无线光通信的调制方式有多种,但缺少综合的分析。研究分析了OOK(开关键控),PPM(脉冲位置调制),DPIM(数字脉冲间隔调制)和DH-PIM(双头脉冲位置调制)等调制方式的符号结构,发射功率,带宽需求和误时隙率。通过分析可知DPIM和DH-PIM调制方式比较适合作为未来大气无线光通信的调制方式。为无线光通信调制方式的选取提供一定的参考依据并指出其发展趋势。
There exist so many modulations for atmospheric optical wireless communication. However, they are in want of systematic analysis. This paper analyzes the symbol structure, emissive power, bandwidth and slot error rate of OOK, PPM, DPIM and DH-PIM. The simulations show that DPIM and DH-PIM are more suitale for the future atmospheric optical wireless communications. How to choose the appropriate modulation is concluded and the future trend is also predicted.
出处
《通信技术》
2009年第1期33-35,共3页
Communications Technology
关键词
大气无线光通信
调制
发射功率
带宽
误时隙率
atmospheric optical wireless communications
modulation
emissive power
bandwidth
slot errorrate
