基于FPGA的最小移频键控调制器的设计与实现

The design and realization of minimum frequency shift keying modulation system based on FPGA

对最小移频键控(MSK)调制系统的原理进行了分析,提出了一种基于DDS设计MSK调制器的方法,设计了基于FPGA的MSK调制器,并在QuartusⅡ下进行了时序仿真,将设计的调制器下载到硬件进行了测试.实践表明,该调制器具有最小功率谱占用率和相位连续的特点,具有良好的频谱特性,能在给定的频带内传送很高的比特速率.

The principle of minimal frequency shift keying modulation system was analyzed; and the method to design MSK was proposed based on DDS; the MSK modulator based on FPGA was designed. The sequence in progress under Quartus Ⅱ was simulated, and the designed modulator downloaded to the hardware was tested. The results show that the modulator has the characteristics of minimal power spectrum occupancy and continuous phase, fine frequency spectrum, and it can transmit very high bit rate within given band.