基于混合调制的WDM-RoF-PON系统仿真研究

摘要

在介绍光载无线系统原理的基础上,设计了基于混合调制WDM-RoF-PON系统架构,采用仿真软件来搭建系统验证该混合调制系统结构的合理性；并提出了一种混合调制方案,在下行数据流中采用IRZ码型,具有更好的消光比和色散容限,降低了用户接收端设备成本,提高了系统传输质量.仿真实验表明混合调制WDM-RoF-PON网络架构方案合理且具有一定的实用价值.%Based on the principle describes optical carrier wireless system, designed a WDM-RoF-PON system architecture based on mixed modulation, used simulation software to build systems and verify mixed modulation system structure rationality. Proposed a hybrid modulation scheme, used IRZ pattern in the downlink data stream, having a better extinction ratio and the dispersion tolerance, and reduced users receiving side apparatus costs, and improved the system transmission quality. Simulation results show that the hybrid modulation WDM-RoF-PON network architecture program is reasonable and has some practical value.