基于DSP的直接数字频率合成的算法研究及实现

Algorithm and Implementation of Digital Frenquency Synthesis with DSP

介绍了直接数字频率合成的基本现状,讨论了采用数字信号处理方法实现直接数字频率合成的原理,提出了将CORDIC算法应用于数字信号处理算法的硬件实现中,从而将许多复杂的算术运算化成简单的加法和移位操作。利用DSP实现直接数字频率合成具有输出频率种类多,硬件结构简单及频谱好等特点,具有广阔的应用前景。

The fundamental present status of direct digital frequency synthesis is introduced. The principle of the direct digital frequency synthesis through digital signal process is discussed. It is pointed out that adopting CORDIC algorithm to implement digital signal process algorithm, because it can turn many complex operations into some simple addition and shift operations. This kind of synthesizer based on DSP has some features such as more output frenquencies, more simple construction and better spectra, and the method has expansive application.