FFT algorithm used in OFDM base band processing is studied and errors in structure chart of Radix-23 SDF 64 points FFT in correlated papers are corrected. 64 points FFT can be implemented with only one complex multiplication and several additions.

• 对OFDM基带处理中的FFT算法进行了研究,修正了相关文献中Radix-23SDF64点FFT结构图中的错误,64点FFT只需一个复数乘法和若干加法即可实现。