CAP-DPIM可见光混合调制方案A Scheme of CAP-DPIM Hybrid Mudulation for VLC
辛嘉珺;王旭东;吴楠;
摘要(Abstract)：
针对可见光通信系统传输性能问题,文章提出了一种无载波幅度相位(CAP)调制与数字脉冲间隔调制(DPIM)结合的混合调制方案。该方案分别利用两者频谱效率和功率效率较高的特点,发送端在脉冲间隔调制的脉冲时隙加载直流偏置光CAP(DCO-CAP)信号,实现混合调制信号的并行生成,接收端通过门限检测和最大似然检测完成混合调制信号的串行解调。推导了室内可见光高斯信道下混合调制方案的误码率(BER)及误帧率(FER)解析表达式。此外,从频谱效率和FER两方面对比分析了该混合调制方案与传统DPIM及DCO-CAP方案的性能优劣。数值仿真结果表明:当频谱效率相同时,混合调制方案较单一调制有更高的可靠性。
关键词(KeyWords)： 可见光通信;无载波幅度相位调制;脉冲间隔调制;误帧率;频谱效率
基金项目(Foundation): 国家自然科学基金资助项目(61371091)
作者(Author): 辛嘉珺;王旭东;吴楠;
Email:
DOI: 10.13756/j.gtxyj.2021.01.002
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