摘要
简要介绍了无线寻呼系统中 FSK (Frequency Shift Keying)调制技术及其硬件的实现基础 DDS (Direct DigitalSynthesis)的基本工作原理 ,进而提出了一种利用 DSP (Digital Signal Processor)实现 FIR (Finite Im pulse Re-sponse)滤波器 ,以改善 FSK调制频谱性能的方案 ,最后给出了实验电路的框图。
In this paper, the FSK(Frequency Shift Keying) modulation technology and the theory of its hardware basis, DDS(Direct Digital Synthesis), are introduced first Then a scheme to improve FSK spectrum efficiency utilizing DSP(Digital Signal Processor) to form a FIR(Finite Impulse Response) filter is proposed, and the actual electric circuit is given as well
出处
《江苏通信》
1999年第4期17-20,共4页
Jiangsu Communication
关键词
频移键控
直接数字频率合成
有限冲激响应
数字信号处理
Frequency shift keying
Direct digital synthesis
Finite impulse response
Digital signal processing
