Title :
Optimal design of a modified code tracking loop
Author :
Welti, A.L. ; Bobrovsky, B.Z.
Author_Institution :
Inst. for Commun. Technol., ETH, Zurich, Switzerland
Abstract :
Optimal design rules are presented for a noncoherent code tracking loop in DS-SS systems. The loop studied here is the modified code tracking loop. Two criteria are considered: the mean time to loss of lock (MTLL) and the probability of error (Pe) in the data due to imperfect synchronization. The MTLL is calculated by solving Kolmogorov´s partial differential equation using the singular perturbation method. It is shown that errors in the tracking loop have a nonnegligible effect on Pe for the DPSK case. Simple design rules are obtained
Keywords :
codes; errors; optimisation; partial differential equations; synchronisation; DPSK; DS-SS systems; Kolmogorov´s partial differential equation; error; modified code tracking loop; singular perturbation method; synchronization; Bandwidth; Clocks; Delay; Differential quadrature phase shift keying; Frequency estimation; Partial differential equations; Perturbation methods; Phase locked loops; Synchronization; Tracking loops;
Conference_Titel :
Electrotechnics, 1988. Conference Proceedings on Area Communication, EUROCON 88., 8th European Conference on
Conference_Location :
Stockholm
DOI :
10.1109/EURCON.1988.11109