先是对最小移频键控(MSK)和直接频率合成(DDS)的基本原理进行了理论分析;然后,介绍了基于DDS的MSK调制方法,在此基础上对MSK调制器模型中的查找表(LUT)进行压了缩优化设计,节约了资源并降低了成本开销;最后,在Matlab/Simuilnk平台上结合Altera公司提供的DSP Builder工具对该设计进行建模、仿真,成功验证了该设计的可行性并下载到FPGA芯片进行了硬件实现。 First, the basic principles of Minimum Frequency Shift Keying (MSK) and Direct Frequency Synthesis (DDS) are theoretically analyzed. Then, an MSK modulation method based on DDS is introduced. Based on the above, the look-up table of MSK modulator model LUT), which saves resources and reduces the cost. Finally, the design is simulated and simulated on the platform of Matlab / Simuilnk in combination with DSP Builder provided by Altera Corporation. The feasibility of the design is verified Sex and downloaded to the FPGA chip for hardware implementation.