测控技术2009，Vol.28Issue(11)：63-67,72,6.
基于FPGA的OFDM时频同步系统的设计与仿真
Design and Simulation of OFDM Synchronization System Based on FPGA
摘要
Abstract
Synchronization is a key technology of OFDM system. However, due to the stochastic of wireless channel, the configuration of judgment threshold of traditional algorithms can not balance the computation com-plexity and judgment accuracy. A novel synchronization algorithm which combines relative threshold with float-ing threshold is proposed to solve this problem. It can reduce the calculation complexity, while maintaining judgment accuracy. By reusing the training sequence, the frequency offset estimation accuracy can be increased as well. Moreover, the key modules of circuit structure and hardware implementation of the algorithm are dis-cussed in detail. Simulation results show that under the condition of multi-path channel, this algorithm has high precision in timing synchronization and frequency offset estimation and it can save hardware resource and im-prove the bandwidth efficiency remarkably.关键词
OFDM/FPGA/时间同步/频率同步Key words
OFDM/ FPGA/ timing synchronization/ frequency synchronization分类
信息技术与安全科学引用本文复制引用
段鹏,何明一,薛敏彪..基于FPGA的OFDM时频同步系统的设计与仿真[J].测控技术,2009,28(11):63-67,72,6.基金项目
国家自然科学基金资助项目(60134010) （60134010）
国家"863-705"项目资助 （）
