摘要
文章对OFDM系统调制与解调技术进行了解析,得到了OFDM符号的一般表达式,给出了OFDM系统参数设计公式和加窗技术的原理及基于IFFT/FFT实现的OFDM系统模型,阐述了运用IDFT和DFT实现OFDM系统的根源所在;对Turbo码—OFDM系统进行了Matlab仿真,并根据特性曲线得出了相关结论。
This paper analyzes the modulation and demodulation of OFDM system, obtaining a general expression of OFDMmark, and giving the design formulas of system parameters, principle of windowing technique, OFDM system model based on IFFT/FFT, the origin which achieves the OFDM system by using IDFT and DFT. And Matlab simulation of Turbo Code -OFDM system is implemented, and a relative conclusion is acquired according to the characteristic curves.
出处
《通信技术》
2008年第11期63-65,共3页
Communications Technology
关键词
OFDM系统
关键参数
加窗技术
系统仿真
OFDM system
essential parameter
windowing technique
system simulation
