摘要
正交频分复用(OFDM)技术是多进制、多载频、并行传输的,其能够提高频带利用率、抗多径传输能力,并且以更高的速率传输数据。面对其多普勒频移会导致系统存在载波频率偏差(CFO)的问题,本文介绍了基于训练序列的Moose和Classen频域CFO估计技术,然后发现两者结合后系统的频偏估计更稳定。通过MATLAB仿真发现:在[-0.370.37]之间,两者结合后的频率估计技术载波频率偏差较好,并通过均方误差(MSE)显示出其系统的稳定性也较好。
Orthogonal frequency division multiplexing(OFDM)technology is multi-ary,multi-carrier,parallel transmission,which can improve frequency band utilization,resist multipath transmission,and transmit data at a higher rate.This paper introduces the Moose based on training sequence and the Classen frequency domain CFO estimation technique,and then finds that the frequency offset estimation of the system is more stable.MATLAB simulation results show that:at[-0.370.37],The combined frequency estimation technique has better carrier frequency deviation,And the mean square error(MSE)shows that the stability of the system is also good.
作者
李轩
王茜
Li Xuan;Wang Qian(School of Electronic Information Engineering,Shenyang University of Aeronautics and Astronautics,Shenyang Liaoning,110136)
出处
《电子测试》
2021年第3期73-74,共2页
Electronic Test
