摘要
针对当前高速数据传输技术中多径效应,符号间干扰的缺陷,提出了正交频分复用(OFDM)系统的设计方案。该方案利用快速傅里叶变换FFT实现调制和解调。这里以Quartus Ⅱ为平台用VHDL语言编程实现各模块,设计了FFT处理器。通过综合仿真和时序分析与MATLAB仿真结果比较验证其正确可行。该系统可以解决高速信息流在信道中的传输问题,可以有效地对抗多径效应,消除符号间干扰,实现数据的高速传输。
Based on the situation that the current high speed data transmission technology multipath effect, symbol interference between symbols, a design of orthogonal frequency division multiplexing（OFDM） systems is proposed. The system employs fast Fourier transform algorithm（FFT） to implement modulation and demodulation. And with Quartus II as the platform, each module is programmed with VHDL language, the FFT processor is also designed. Meanwhile, the feasibility is verified through comprehensive analysis and time-series analysis in comparison with MATLAB simulation. The system could effectively resist the multipath effect, eliminate the interference between symbols and achieve high-speed data transmission.
出处
《信息安全与通信保密》
2011年第3期58-60,共3页
Information Security and Communications Privacy
