【摘要】 为了改进复杂交通环境下可见光通信调制方法,介绍了OOK、PPM、DPPM及DPIM四种调制方式并且对其性能指标进行了分析。针对PPM和DPIM等调制方法存在的问题,提出了一种新型的无线光通信调制方法 -H-PPM(Head Pulse Position Modulation)。综合各项性能对比,H-PPM调制方法更具可靠性。理论分析和仿真结果表明,此H-PPM调制方法更适合复杂交通环境下的可见光通信。更多还原

【Abstract】 In order to improve the complex traffic environment visible light communication modulation method, this paper introduced the OOK, PPM, DPPM and DPIM four modulation methods and the performance indicators were analyzed. Finally put forward a new kind of modulation method of FSO-H-PPM(Head Pulse Position Modulation),aiming at the existing problem of PPM and DPIM modulation method. Considering the various performance indicators comprehensively, H-PPM modulation method is more reliable. Theoretical analysis and simulation results show that the H-PPM modulation method is more suitable for the visible light communication of complex traffic environment.更多还原