提出了一种在正交频分复用-光载无线(OFDM-RoF)接收系统中符号定时同步算法的设计方案,阐述了该算法在现场可编程门阵列(FPGA)上的实现过程,分析了该设计方案的优势。设计完成后,运用Modelsim SE 10.1c对该算法进行仿真测试并对实验结...提出了一种在正交频分复用-光载无线(OFDM-RoF)接收系统中符号定时同步算法的设计方案,阐述了该算法在现场可编程门阵列(FPGA)上的实现过程,分析了该设计方案的优势。设计完成后,运用Modelsim SE 10.1c对该算法进行仿真测试并对实验结果进行分析。展开更多
文章采用由分步傅里叶变换求解薛定谔方程的方法研究了一套应用于基于正交频分复用(Orthogonal Frequency-Divi-sion Multiplexing,OFDM)技术的光纤无线通信(Radio over Fiber,ROF)传输系统模型,对其光学传输性能进行了仿真模拟计算。...文章采用由分步傅里叶变换求解薛定谔方程的方法研究了一套应用于基于正交频分复用(Orthogonal Frequency-Divi-sion Multiplexing,OFDM)技术的光纤无线通信(Radio over Fiber,ROF)传输系统模型,对其光学传输性能进行了仿真模拟计算。分析了光纤信道中色散和非线性参数对信号传输质量的影响,指出只有进行脉冲压缩才能在光纤中传输OFDM-ROF信号。展开更多
The merging of optical communication and wireless communication is a tendency in the development of future communication.Orthogonal Frequency Division Multiplexing (OFDM) technology is becoming a core technology in th...The merging of optical communication and wireless communication is a tendency in the development of future communication.Orthogonal Frequency Division Multiplexing (OFDM) technology is becoming a core technology in the physical layer of next generation wireless communication system.Taking advantages of both wireless communication and optical communication,OFDM Radio over Fiber (OFDM-RoF) system is characterized by high speed,large capacity and high spectral efficiency.However,it still has some problems to be addressed,including dispersion and nonlinearity effects.The nonlinearity effect of fiber and modulator can be mitigated by PAPR reduction algorithms,the dispersion effect can be eliminated using Cyclic Prefix (CP) and channel estimation,and the fiber nonlinearity can be reduced by techniques such as digital phase conjugation,Partial Carrier Filling (PCF),nonlinearity precompensation and serial correlation reduction.展开更多
文摘文章采用由分步傅里叶变换求解薛定谔方程的方法研究了一套应用于基于正交频分复用(Orthogonal Frequency-Divi-sion Multiplexing,OFDM)技术的光纤无线通信(Radio over Fiber,ROF)传输系统模型,对其光学传输性能进行了仿真模拟计算。分析了光纤信道中色散和非线性参数对信号传输质量的影响,指出只有进行脉冲压缩才能在光纤中传输OFDM-ROF信号。
基金funded by the National Natural Science Foundation of China under Grant No.60877052by the National High Technology Research and Development Program of China("863" program)under Grant No.2009AA01Z220
文摘The merging of optical communication and wireless communication is a tendency in the development of future communication.Orthogonal Frequency Division Multiplexing (OFDM) technology is becoming a core technology in the physical layer of next generation wireless communication system.Taking advantages of both wireless communication and optical communication,OFDM Radio over Fiber (OFDM-RoF) system is characterized by high speed,large capacity and high spectral efficiency.However,it still has some problems to be addressed,including dispersion and nonlinearity effects.The nonlinearity effect of fiber and modulator can be mitigated by PAPR reduction algorithms,the dispersion effect can be eliminated using Cyclic Prefix (CP) and channel estimation,and the fiber nonlinearity can be reduced by techniques such as digital phase conjugation,Partial Carrier Filling (PCF),nonlinearity precompensation and serial correlation reduction.
