A reduced symbol synchronization algorithm for OFDM Systems
In order to increase the accuracy of timing estimation in frequency selective fading (FSF) channels and reduce the computational complexity, in this paper an adaptive symbol synchronization of OFDM blind channel estimation is proposed. First, by the ML algorithm used in flat fading channels, we give a rough estimated time position(dML),then choose Δd,and give the maximum d1 of the measure function 1 in the range of dML±Δd.Next,in the range of dML±2Δd we continue to look for the maximum d2. If the two values d1 and d2 coincide, now we can stop and this point shall be the timed position, otherwise continue to search until the maximum point position fixed. Simulation results show that the accuracy of this algorithm is consistent with the traditional algorithms, but its computational complexity is far lower than the traditional algorithms.
ML symbol synchronization adaptive decision FSF channel
Wenxiu Li Chaowei Yuan Jie Shen
Department of Electronic Engineering Shandong College of Electronic Technology Jinan,China School of Information and Communication Engineering Beijing University of Posts Telecommunication Be
国际会议
南宁
英文
139-142
2010-10-13（万方平台首次上网日期，不代表论文的发表时间）