Cramer Rao Bound for Multipath Time Delays in a DS-CDMA System
نویسندگان
چکیده
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 show also that the stronger the path energy, the lower is the variance of the time-delay estimate corresponding to that path.
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