摘要
OFDM(正交频分复用)技术是一种多载波数字调制技术,在无线多径衰落信道下具有较好的传输特性,文中设计短波电台系统采用了OFDM技术来对克服多径衰落带来的干扰,并且给出了系统的设计方案。利用simulink建模,并在瑞利衰落信道和高斯信道下进行了仿真,结果显示出性能上有较大的改进。
OFDM （orthogonal frequency division multiplexing） technology is a digital multi-carrier modulation technology, and the wireless multi path fading channel has good transmission characteristics. This paper describes the design short-wave radio system, which uses the OFDM technology to overcome the interference by multipath fading. The modeling by Simulink and the simulation under the Rayleigh fading channels and Gaussian channel indicate that the performance is fairly improved.
出处
《通信技术》
2009年第9期23-25,共3页
Communications Technology
关键词
正交频分复用
多径衰落
SIMULINK仿真
orthogonal frequency division multiplexing
multi-path fading
simulink simulation
