一种高效的水下可见光OFDM通信方案  

Efficient underwater visible light OFDM communication scheme

作　　者：马春波[1] 柴晨阳 敖珺[1] MA Chunbo;CHAI Chenyang;AO Jun(School of Information and Communication,Guilin University of Electronic Technology,Guilin Guangxi 541004,China)

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《光通信技术》2021年第9期1-4,共4页Optical Communication Technology

基　　金：广西自然科学基金的资助(项目编号:2018GXNSFAA294056)资助。

摘　　要：为了满足光正交频分复用(OOFDM)系统中发光二极管(LED)发送端信号实值正数的要求,依据快速哈特莱变换(FHT)"实进实出"的特性,采用FHT替代快速傅里叶变换(FFT),将正交幅度调制(QAM)映射应用在基于FHT的非对称限幅直流偏置OOFDM系统,并进行了仿真实验。仿真结果表明:在同等水下背景噪声的条件下,与相同频带利用率的水下可见光OFDM通信系统相比,FHT系统具有较好的误码性能。In order to solve the requirement of positive real value of the signal at the light-emitting diode(LED) transmitting end in the optical orthogonal frequency division multiplexing(OOFDM) system, according to the characteristics of fast Hartley transform(FHT) "Real in Real out", FHT is used instead of fast Fourier transform(FFT), quadrature amplitude modulation(QAM)mapping is applied to FHT-based asymmetric limiting direct-current biased OOFDM system, and simulation experiments are carried out. The simulation results show that the FHT system has better bit error performance than the underwater visible OFDM communication system with the same frequency band utilization under the condition of the same underwater background noise.

关 键 词：水下可见光通信 光正交频分复用 快速哈特莱变换 水下背景噪声 

分 类 号：TN929.12[电子电信—通信与信息系统]