文章介绍了OFDM关键技术,并利用SPW软件对OFDM基于FFT算法进行了仿真,同时对仿真结果进行分析。最后在不同的信道条件下,运用保护间隔和信道估计的方法对OFDM系统的误码率进行分析,并得出性能曲线。
This paper describes the key technique of OFDM. OFDMbased on the FFT algorithm is simulated by making use of the Signal Processing Worksystem, and the results of the simulation are analyzed, Finally, in the different conditions, the influence of CP, the method of channel estimation and the BER curves of OFDM system are given and discussed.