Published papers: Zheng, Han, Tian Xiaoyan, Huang Yongping, a new algorithm for OFDM timing synchronization; Simulation of OFDM system based on SIMULINK, Journal of Hebei University, Korea; Design and implementation of DK-III torsional vibration measuring instrument 20 1 1 year; Zhang Yanchun; Li Caixia; Shi Liming; Xu Hongzhi, simulation analysis of CZT algorithm for fundamental frequency measurement of power signal in automation instrument, 02, 2009 Li Fenhua; Chang Tieyuan; Li Caixia; Journal of Hebei University (Natural Science Edition) Song Tierui participated in the project: Youth Fund of Hebei University 1 Project-Branch Labeling Technology and Its Application in Rail Inspection. He presided over the Hebei Science and Technology Plan project "Research on signal transmission -OFDM synchronous tracking technology in high-speed wireless communication system" (completed). Presided over the project of intelligent quantitative analysis of ultrasonic images of abdominal parenchymal organs in Hebei Science and Technology Department (completed). Research on synchronization algorithm of the second generation 4 OFDM system-horizontal topic (completed). The second and fifth generation computer vision systems for automatic detection of rail wear-Hebei Science and Technology Support Project (completed). Fifth Prize: First Prize of Hebei Multimedia Courseware Competition.