MSK调制解调器的设计与实现

Design and Implementation of MSK Modem

为了研究MSK调制解调器的数字化实现方法,依据直接数字频率合成(DDS)技术和基于离散傅里叶变换(DFT)的谱分析理论,采用Simulink仿真手段,建立了数字化实现方案模型,确定了方案的可行性并给出了系统各模块的参数,最终通过Verilog HDL语言,利用现场可编程门阵列FPGA实现了MSK数字化调制解调.

MSK is a digital modulation which is widely used in a variety of communication systems.By two significant advantages which are constant or small ups and downs envelope and minimal power spectrum,it is consistent with today＇s modern communication technology development status and research directions,so it arises from a wide range of attention.In this paper a digital method of accomplishing MSK modulation and demodulation is put up according to the primary principle of direct digital synthesize technique and spectrum analysis which is based on DFT.Then a digital model is established and the feasibility of the scheme is demonstrated,system parameters of each module is given through Simulink simulation.At last digital modulation and demodulation of MSK is implemented using the device of field programmable gate array（FPGA） based on the language of Verilog.