摘要
Abstract
In order to solve the problem of timing synchronization for OFDM system with high mobile speed, an algorithm is presented, which includes timing acquisition and timing tracking 2 parts and realized based on the designed Preamble field. With consideration of the symbol timing offset and sample timing offset, an OFDM system mathematics mode is derived, and the work performance with affecting by two timing offsets is analyzed.Finally the algorithm implementation is analyzed in detail, and a judging idea of which sample corresponds to the synchronization acquisition position and which sample corresponds to the synchronization track position is provided. The locking accuracy caused by adjusting different threshold is discussed, and some simulation is supplied. The simulation results show that, the timing synchronization algorithm presented in the paper has higher synchronization locking accuracy and easy to be implemented.关键词
OFDM/定时同步/定时偏差估计/PreambleKey words
OFDM/timing synchronization/timing offset estimation分类
信息技术与安全科学
