提出一种基于数字重采样的多载波调制方法,该方法先将不同速率的基带调制信号变换到相同的采样速率,并根据分配的频点分别进行数字上变频,然后进行数字合路,最后再将合路后的数字信号送专用芯片进行数字中频调制。与传统的基于中频合路的多载波调制方式相比,具有硬件实现简单、通道一致性好和易于调试的特点。%This paper proposes a multi-carrier modulation method based on digital re-sampling.This method firstly shifts baseband modulation signals of different rates to the same sampling rate;then according to the allocated frequency,digital upconversion and multiplexing are conducted;finally,multiplexed signals are sent to a special chip for IF digital modulation.Compared with traditional IF-based multiplexing modulation,the method introduced in the paper has a better channel consistency and is easy to be implemented.
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