基于FPGA的OFDM调制解调系统设计与实现  

Application of IFFT/FFT in OFDM Systems

作　　者：崔丽珍[1] 王慧琴[1] 马勇[1] 

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《电子与封装》2010年第9期46-48,共3页Electronics & Packaging

摘　　要：正交频分复用(OFDM)是第四代移动通信的核心技术,该技术在高速数据传输中得到了广泛的应用。文章给出了正交频分复用系统的基本模型和该系统所采用的调制与解调方法;根据OFMD的特点,本设计提出了一种基于IFFT/FFT的OFDM调制解调器的低成本FPGA的实现方法。在ISE环境下完成对OFDM无线通信系统中快速傅里叶变换算法的仿真,仿真结果表明快速傅里叶变换在OFDM技术中具有一定的使用价值。实践证明,该方法具有设计简单、快速、高效和实时性等特点。OFDM is the key technology of 4G in the mobile communication and the technology in high-speed data transmission has been widely used. This paper gives the basic model of orthogonal frequency division multiplexing system and the system used by the method of modulation and demodulation. According to the characteristics of OFDM, the design proposes a low-cost FPGA implementation way of OFDM modem based on IFFT/FFT. In the ISE environment, this paper simulates fast Fourier transform of OFDM wireless communication system. The simulation result shows the definite importance of IFFT/FFT to OFDM in practical application. The experiences show that the method is simple, fast, efficient and real time and so on.

关 键 词：OFDM 调制 解调 FFT IFFT 

分 类 号：TN402[电子电信—微电子学与固体电子学]