Principle and Key Technologies of OFDM-RoF  

作　　者：Li Weilin,Zhang Jie,Gu Wanyi(Institute of Optical Communication and Optoelectronics,Beijing University of Posts and Telecommunications,Beijing 100876,P.R.China) 

出　　处：《ZTE Communications》2009年第3期36-40,共5页中兴通讯技术（英文版）

基　　金：funded by the National Natural Science Foundation of China under Grant No.60877052;by the National High Technology Research and Development Program of China("863" program)under Grant No.2009AA01Z220

摘　　要：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.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.

关 键 词：OFDM Principle and Key Technologies of OFDM-RoF 

分 类 号：TN919.3[电子电信—通信与信息系统]