【摘要】 频偏估计是FDD-LTE(频分双工长期演进)系统接收端的重要模块之一。文章介绍了FDD-LTE系统上行信道解调参考信号的产生原理以及时频位置映射方式,通过对硬件性能的评估,采用基于导频的残留频偏估计算法提出了一种PUSCH(物理上行共享信道)频偏估计实现方案。通过分析其实现复杂度和定点运算误差,表明该方案可以满足实时处理的要求,并具有较好的性能。更多还原

【Abstract】 Frequency offset estimation is one of the major modules of the receiving end in a Frequency Division Duplex-Long Term Evolution(FDD-LTE) system.This paper introduces the generation principle of the uplink channel demodulation reference signals and the way of their time-frequency location mapping.On the basis of the hardware performance estimation,it presents an implementation scheme for the Physical Uplink Shared Channel(PUSCH) frequency estimation by using the pilot-frequency-based residual frequency offset estimation algorithm.The analysis of the complexity of its implementation and the fixed-point computation errors shows that this scheme has fairly good performance and can satisfy the requirements of real-time processing.更多还原