MSK信号数字化调制解调的工程实现方法

THE ENGINEERING IMPLEMENTATION OF DIGITAL MODULATION AND DEMODULATION FOR MSK SIGNAL

MSK信号是现代无线通信中重要的信号类型,因其优良的特性在工程实践中有着广泛的应用。基于FPGA实现数字化的MSK调制解调器是高速数字电台必要的技术手段之一,具有广阔的应用前景和可扩展性。在深入研究MSK信号特征和调制解调理论的基础上,采用直接频率合成和平方环相干载波提取的方法,应用FPGA芯片给出了MSK数字化调制解调的具体工程实现步骤,并通过Modelsim仿真验证设计。

MSK signal is an important signal type in modern wireless communication. Due to its excellent characteristics , it has a wide range of applications in engineering practice. The implementation of digital MSK modulator and demodulator based on FPGA is one of the necessary technical means of high-speed digital radio, and it has broad application prospects and extensibility. Based on the in-depth study of MSK modulation and demodulation theory, this paper adopted direct frequency synthesis and square loop coherent carrier extraction, and gave the specific engineering implementation steps of MSK digital modulation and demodulation by using FPGA chip. The design was verified by the Modelsim simulation.