激光与光电子学进展, 2019, 56 (14): 140601, 网络出版: 2019-07-12
导频辅助降低PAPR技术在光正交频分复用通信系统中的应用 下载: 937次
Application of Pilot-Assisted Peak-to-Average Power Ratio Reduction Technology in Optical Orthogonal Frequency Division Multiplexing Communication System
光通信 光无线 正交频分复用 峰均功率比 导频辅助调制 平均光功率 optical communications optical wireless orthogonal frequency division multiplexing peak-to-average power ratio pilot-assisted modulation average optical power
摘要
兰州交通大学“计划”资助项目;
Abstract
This study investigates the application of a pilot signal in an orthogonal frequency division multiplexing (OFDM)-intensity modulated optical wireless communication system to reduce the peak-to-average power ratio (PAPR). The pilot-signal-phase selection is based on a selected mapping (SLM) algorithm. The maximum-likelihood criterion is used to estimate the pilot signal at the receiver. In a reliable communication link with a bit error rate (BER) of less than 10
-3, the BER of the pilot-assisted optical OFDM system is basically the same as that of the basic optical OFDM system (without pilot and PAPR reduction technology). Under the condition of a high-order (magnitude M>4) constellation, the pilot-assisted PAPR reduction technology is superior to the traditional SLM technology. Compared with the basic optical OFDM system, the pilot-assisted optical OFDM system can reduce the PAPR by approximate 2.5 dB under suitable conditions. Furthermore, the pilot-assisted optical OFDM system can reduce PAPR more effectively at a moderate point of M=64 and a complementary cumulative distribution function of 10
-4, without reducing the system's error performance.
倪玮隆, 郑玉甫, 冯楚滢. 导频辅助降低PAPR技术在光正交频分复用通信系统中的应用[J]. 激光与光电子学进展, 2019, 56(14): 140601. Weilong Ni, Yufu Zheng, Chuying Feng. Application of Pilot-Assisted Peak-to-Average Power Ratio Reduction Technology in Optical Orthogonal Frequency Division Multiplexing Communication System[J]. Laser & Optoelectronics Progress, 2019, 56(14): 140601.