A New Scheme for Adaptive Slot Structure in Mobile Communication Systems
移动通信中一种自适应时隙结构的新方法

A Single Carrier/Frequency Domain Equalization (SC/FDE) system with time multiplexed pilot channel is designed. In this system, the Doppler-shift of the time-varying multi-path channel is estimated by calculating the Level Crossing Rate (LCR) of the signal envelope with the channel coefficient estimation on the effective fingers. Based on the Doppler-shift estimation and its relationship with pilot sampling rate, the slot structure and the pilot density are adjusted adaptively, which ensure high system capacity and good receiving performance in a wide range of mobile velocities.