过采样近似完全重构 DFT 调制滤波器组的设计。首先,分析了传递函数和 混叠传递函数的性质，给出了因果 FIR DFT 调制滤波器组的系统延迟与线性相位 分析和综合原型滤波器阶数的关系。随后，过采样近似完全重构 DFT 调制滤波器 组的设计问题被描述为一个非凸优化问题。-Near perfect reconstruction oversampled DFT modulated filter design. First, the analysis of the transfer fun

Based on the principle of OFDM system, the paper mainly includes the following aspects: the development of mobile communications, the characteristics of the radio channel, OFDM system theory, the advantages and disadvantages, key technologies, and ad