摘要
提出了一种用于数字通信的位同步方法,它是基于脉宽调制技术的间接插入导频法。推导了脉宽调制处理后信号的功率谱密度。试验结果表明,脉宽调制处理后的信号的功率谱密度中含有码元同步信号。基于脉宽调制技术的位同步方法不仅适合于双极性信号传输,还适合于单极性信号传输。该技术具有简洁、可靠的特点。
A symbol synchronization method for digital communication is proposed, and it is a indirectly inserted pilot frequency based on pulse width modulation （PWM）. The power spectrum density （PSD） of the signal processed by PWM technology is deduced. The experiment results show that the PSD contains symbol synchronization signal, the digital symbol synchronization based on PWM technology is acceptable for digital communication system, and its principle and realization is rather pithy.
出处
《通信技术》
2008年第9期1-2,5,共3页
Communications Technology
关键词
脉宽调制
位同步
导频
功率谱密度
pulse width modulation （PWM）： symbol synchronization： pilot frequency： power spectrum density （PSD）
