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Simulation of a second order delay locked loop in multipath environment

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4 Author(s)
Gonzalez, A. ; Alcatel Standard Electrica, Madrid, Spain ; Ruiz, B. ; Lopez, M.I. ; Valdeolmillos, C.

The delay-locked loop (DLL) is a powerful technique to keep the alignment between PN sequences. These sequences are widely used in code division multiple access (CDMA) communication systems. A second-order DLL is selected as the basic scheme for a simulator due to its ability to correct a phase and frequency steps. An event-driven simulator is used for testing the performance of the DLL. In this way, no linear assumptions are made. Simulations are performed in a multipath environment by means of an N-paths channel model. The results of the simulations of the performance of the DLL in a mobile environment are presented, and some conclusions are added as consequences of the simulation results

Published in:

Vehicular Technology Conference, 1993., 43rd IEEE

Date of Conference:

18-20 May 1993