论文部分内容阅读
在理论上推导了采用快速傅里叶逆变换/傅里叶变换(IFFT/FFT)实现正交频分复用(OFDM)调制解调的可行性,分析了采用IFFT/FFT实现OFDM调制解调比传统方法更具优势;然后在数字信号处理器(DSP)硬件平台上对采用IFFT/FFT实现OFDM调制解调进行了验证。实验结果表明:采用IFFT/FFT不仅能正确实现OFDM信号的调制解调,而且还大大简化了OFDM系统结构,降低了系统实现难度,节约了成本。
The feasibility of OFDM modulation and demodulation using Inverse Fast Fourier Transform / Fourier Transform (IFFT / FFT) is deduced theoretically. The OFDM modulation and demodulation using IFFT / FFT is analyzed. Which has advantages over traditional methods. Then, the OFDM modulation and demodulation using IFFT / FFT is verified on the digital signal processor (DSP) hardware platform. Experimental results show that IFFT / FFT can not only correctly modulate and demodulate OFDM signals, but also greatly simplify the structure of OFDM system and reduce the system implementation difficulty and cost.