摘要
主要讨论利用叠加导频技术对OFDM系统进行定时和频偏估计的算法。该算法利用线性叠加在OFDM符号上的PN序列估计定时和频率偏移。使用定时和频偏估计的方差来评价系统性能。通过在高斯和衰落两种信道中的仿真结果说明,此算法能够进行精确定时并且频偏估计范围较大。
This paper describes a synchronization algorithm of OFDM system. A PN_sequence superimposed on the OFDM signal is used to estimate the timing and frequency deviation. This system is evaluated by the variances of the timing and frequency_offset estimation. The simulation results in AWGN and fading channels have implied that the algorithm can get accurate timing and wide range of frequency_offset estimation.
出处
《通信技术》
2002年第5X期20-22,25,共4页
Communications Technology
