DCO-OFDM系统峰均比抑制算法实验设计  

Experimental design of peak-to-average ratio reduction algorithm for DCO-OFDM system

作　　者：李晓记[1] 曾繁泽 庄泽文 LI Xiaoji;ZENG Fanze;ZHUANG Zewen(Ministry of Education Key Lab of Cognitive Radio and Information Processing,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学认知无线电与信息处理教育部重点实验室,广西桂林541004

出　　处：《实验技术与管理》2022年第12期80-85,136,共7页Experimental Technology and Management

基　　金：广西高等教育本科教学改革工程重点项目“专创融合背景下跨学科‘项目化’综合实验教学改革与探索”(2021JGZ121);认知无线电与信息处理省部共建教育部重点实验室2021年度开放基金项目(CRKL210103)。

摘　　要：针对可见光通信直流偏置光正交频分复用(direct current-biased optical-OFDM,DCO-OFDM)系统中峰均功率比(peak-to-average power ratio,PAPR)大的缺点,采用限幅与滤波(clipping and filtering,CAF)、部分传输序列(partial transmit sequence,PTS)、矩阵变换技术(matrix transformation method,MTM)对DCO-OFDM系统进行PAPR抑制。首先建立DCO-OFDM系统模型,然后对3种抑制技术进行原理分析,最后进行实验仿真,从互补累积分布函数(complementary cumulative distribution function,CCDF)和计算复杂度两方面比较了3种算法的PAPR抑制性能,并总结实验存在的不足以及提出展望。In view of the disadvantage of large peak-to-average power ratio(PAPR) in the direct current-biased orthogonal frequency division multiplexing(DCO-OFDM) system of visible light communication, the PAPR reduction of the DCO-OFDM system is performed with clipping and filtering(CAF), partial transmit sequence(PTS), and matrix transformation method(MTM). Firstly, the DCO-OFDM system model is established, and then the principle of the three PAPR reduction method is analyzed. Then, the experimental simulation is carried out. The PAPR reduction of the three algorithms is compared in terms of complementary cumulative distribution function(CCDF) and computational complexity performance. Finally, summarize the shortcomings of the experiment and put forward prospects.

关 键 词：直流偏置光正交频分复用 峰均功率比 抑制技术 计算复杂度 

分 类 号：TN929.1[电子电信—通信与信息系统]