基于浮点数字信号处理芯片DSP6711,采用软件无线电方法构建一个基本的OFDM通信系统。在用MATLAB语言对该通信系统进行仿真的基础上,完成了CCS2.1软件平台上的由DSP硬件组成的OFDM系统C语言编程和运行通过;并利用Matlab所建立的仿真信道对此OFDM系统的编解码性能进行了测试。结果表明,论文所建立的编解码实现方案对高斯衰落信道具有一定的对抗性。Adopting the idea of the software radio, the article designs an OFDM communication system implemented by floating dot digital signal processing chip DSP6711.Basing on the result of the simulation of this system with MATLAB, the author implemented the OFDM communication system with DSP hardware, using C language of the professional software CCS2.1. In addition, the author test the performance of the encoding & decoding of the OFDM communication system by utilizing the channel simulated with MATLAB. The results indicate that the encoding & decoding scheme designed in the article possesses the fine performance of antagonism to Gauss's Fading Channel.国家自然科学基金项目(60272028
