CIR-BASED AND SSC-BASED FTL/TTL/CHANNEL ESTIMATION

摘要

Methods and systems are disclosed for channel estimation and frequency tracking in mobile communication systems. Particularly various ways of using the time domain impulse channel response based on the staggered frequency domain pilot tones are presented that enable rapid frequency error estimation and frequency tracking control. A mathematical model is developed that provides a convenient metric for evaluating tolerable frequency error as well as modes for switching between CIR-based and SSC-based frequency tracking.