In this paper a new modified Cramer-Rao lower bound (MCRLB) for multipath time-delay estimation is developed for DS-CDMA systems. The lower variance bound of each estimated path delay is determined via computer simulations using the theoretical results, and it is compared with an efficient and practical delay estimation method, namely peak tracking with pulse subtraction. Simulation results sho...

In this paper, the properties of a high gain observer-based disturbance estimation are analysed, and a time delay calculation approach is proposed for improving the identification of model parameter variation. The focus of this paper is the time delay between the actual disturbance and its estimate in a high gain disturbance estimation observer. It is proved, in this paper, the delay depends on...