CODE TRACKING SYSTEM USING FINGER SYMBOL ENERGIES TO DECIDE FINGER LOCK IN DS-CDMA UWB MODEM AND METHOD THEREOF

摘要

The invention DS double CD M. A. Yu fingers symbol energy to determine whether the finger lock in analogy modem Using the synchronization tracking system and relates to the method, specifically, the amplitude and phase estimation for synchronous demodulation with respect to the set of 2N _F of the code phase and using a channel estimation value of each finger 2N _F and the channel estimator for calculating the symbol energy of the stage, calculated from the channel estimator 2N _F 2N _{storing the symbol energy of the short F} stage and the symbol energy buffer, the 2N _F and the battery symbol time by using the energy stored in the energy of the symbol energy buffer stage, on-time energy and departure time energy time for calculating the three-time energy, such as and the energy calculator, and code phase selector for selecting a code phase corresponding to the energy of the maximum of the three energy calculated from the time the energy converter, the symbol boundary set to the code phase with the symbol boundary time from the code phase selector The set consists of a time.