摘要
针对数字无线通信系统中全数字接收机的采样时钟同步问题,在利用频域信息估计采样时钟误差的平方率算法的基础上,提出了基于前馈结构的分段时钟同步。通过分段计算数字基带采样信号的频域信息得到采样时钟误差,再通过前馈结构对采样信号进行插值和抽取,实现采样时钟同步。仿真试验表明该算法适用于多径环境和突发通信。
The timing synchronization problem is vital to digital receiver in digital wireless communication system. In this paper,we proposed a feed-forward segmentation timing synchronization method,basing on the frequency information of square sampling data.The synchronization algorithmgets the sampling error by computing the frequency information of digital baseband sampling signalwith segmented method,and completes synchronization using the feed-forward structure with the interpolation and decimation. Simulation results show the method is applicable to the multipath channel and burst communication.
出处
《无线电工程》
2015年第7期31-34,共4页
Radio Engineering
基金
国家科技重大专项基金资助项目(2014ZX03006-003)
关键词
时钟同步
时钟误差估计
立方插值
内插控制
timing synchronization
timing error estimate
cubic interpolation
interpolation control
