【摘要】 针对TDD-LTE系统下行链路高速移动场景提出了一种小数倍频偏估计算法,该算法利用主同步信道(P-SCH)和辅同步信道(S-SCH)的频域信道估计值的共轭相关来估计载波频率的小数倍偏移。理论分析与仿真结果表明所提出算法的估计范围能够覆盖高速移动场景中的最大小数倍频偏,同时仿真结果也表明所提算法在加性高斯白噪声信道(AWGN)和莱斯信道下均具有良好的性能。更多还原

【Abstract】 A decimal frequency estimation algorithm for TDD-LTE downlink high speed moving scenarios is proposed.The decimal offset of carrier frequency is estimated by conjugate correlating the frequency-domain channel estimation of P-SCH and that of S-SCH.Theoretical analysis and simulation results show that the proposed algorithm covers a sufficient estimation range for the high speed moving scenarios,and simulation results also verify the proposal algorithm with good performances both in AWGN and Ricean channel.更多还原