The traditional delay-locked loop(DLL) is improved to meet the needs of tracking the ultra-wide band width(UWB) communication signals.
对传统延迟锁定环(DLL:delay-locked loop)进行改进,以满足超宽带UWB通信信号跟踪的需要。
This paper describes an incoherent DLL which is often used in code tracking,and analyses its tracking error variance based on three jamming patterns,namely the CW,wide-band and part-band jamming patterns.
文章分析了直扩通信系统码跟踪中常用的一种非相关延迟锁定环在连续波(CW)干扰、高斯白噪声和部分频带干扰下的跟踪误差方差,并通过仿真验证了理论推导结果,所得的结论对于延迟锁定环路的分析和设计有重要意义。
This paper first introduces the composition and operation principle of the typical DLL and then covers the Kalman Filter and the Extended Kalman Filter applied in the nonlinear system.
延迟锁定环是GPS接收机中实现PN码的捕获和跟踪的重要部分,对系统的性能有着重要的影响。
Proposed a symbol timing recovery(STR)scheme for DTMB(Digital Terrestrial/Television Multimedia Broadcasting)receivers,which is implemented by an all digital DLL(Delay Locked Loop)in time domain.
该方案采用全数字延迟锁定环来跟踪定时误差,与传统的时域鉴相器相比,本文提出的鉴相算法能实现增益的自动归一化,且捕获范围为原算法的三倍,能纠正采样频率偏差达到±90ppm。
Then, we analyse the theory of Delay Lock Loop(DLL), based.
首先通过对多径信号特性的分析得到存在多径时的接收信号模型,然后在对扩频测距系统的延迟锁定环路(Delay Lock Loop)工作原理的分析的基础上,阐明了多径存在时码跟踪环路产生误差的机理。
