Convergence characteristic of delay-lock loop inmultipath environment
Wei Dong Xiang, Yan Yao · Electronics Letters · 1998
The delay-lock loop (DLL) is utilised to recover the synchronising signal of the PN code in CDMA systems. However, few papers wholly illustrate the convergence characteristics of the DLL in multipath cases; this problem is studied by the authors. Theoretical analysis and simulation show that the DDL would lock at a point that is the linear combination of the different delays of each multipath signal, weighted by its power level. Therefore, there is an inherent error in the DLL in multipath environments.