多幅度数字脉冲间隔调制的水下无线光通信研究

摘要

为了研究适用于水下无线光通信的调制方式,采用分析水下无线光通信的信道模型、并推导该信道中用多幅度数字脉冲间隔调制方式的误包率表达式、带宽利用率和功率利用率的方法,对不同调制方式进行了理论分析比较.结果表明,多幅度数字脉冲间隔调制的带宽利用率和功率利用率最高.这一结果对选择适合用于水下无线光通信的调制方式是有帮助的.%In order to investigate a digital modulation applicable for underwater wireless optical communication (UWOC),the model of the UWOC channel was analyzed.The packet error rate, bandwidth efficiency and energy efficiency of the channel based on multilevel digital pulse interval modulation ( MDPIM ) was deduced.Comparison was carried out between different modulation modes.Both power efficiency and bandwidth efficiency are the highest for MDPIM.The results help to determine the modulation suitable for underwater wireless optical communication.