LTE D2D频偏估计算法及其仿真分析  

Frequency Offset Estimation Algorithm and its Simulation Analysis for LTE D2D System

作　　者：徐子龙 刘为 温文坤[3] 闵铁锐 唐瑞波 王琳[3] XU Zilong;LIU Wei;WEN Wenkun;MIN Tierui;TANG Ruibo;WANG Lin(The 7th Research Institute of China Electronics Technology Group Corporation,Guangzhou 510310,China;CETC Advanced Mobile Communication hmovation Center,Shanghai 200331,China;Guangzhou Techphant Co.,Ltd.,Guangzhou 510310,China)

机构地区：[1]中国电子科技集团公司第七研究所,广东广州510310 [2]中国电子科技集团公司新一代移动通信创新中心,上海200331 [3]广州技象科技有限公司,广东广州510310

出　　处：《移动通信》2021年第5期96-101,共6页Mobile Communications

基　　金：广东省重点领域研发计划"新一代通信与网络"重大科技专项基金:面向行业应用的5G传输及组网关键技术(2018B010114001)。

摘　　要：以LTE D2D为应用场景,提出了一种先估计小数倍频偏、后估计整数倍频偏的估计算法,小数倍频偏估计算法利用D2D同步信号的特殊结构和周期性,优化了估计精度;整数倍频偏的频率估计范围可以按需调整,解决了LTE D2D系统需要估计大频率偏差的问题。给出了算法在AWGN/EVA信道模型下的性能仿真和分析,仿真显示在特定参数配置下所提算法引入的性能损失(相较于0频偏的理想情形)小于1 dB。For the application scenario of LTE D2 D, an estimation algorithm is proposed by first estimating the fractional frequency offset and then the integer one. Specifically, the former estimator adopts the special structure and periodicity of D2 D synchronization signal and the estimation precision is optimized, and the latter one adjusts the frequency offset estimation range on-demand and solves the issue of estimating large frequency offsets for LTE D2 D system. The performance simulation and analysis of the proposed algorithm are provided for AWGN/EVA channel models. Compared with the ideal case with 0 frequency offset, simulation results show that the performance loss of the proposed algorithm is less than 1 dB for specific parameter configurations.

关 键 词：频偏估计 LTE D2D 侧链通信 近邻通信 

分 类 号：TN929.5[电子电信—通信与信息系统]