太赫兹科学与电子信息学报, 2016, 14 (2): 212, 网络出版: 2016-12-07
一种鲁棒的3GPP-LTE下行链路初始主同步算法
A robust algorithm for the initial synchronization in 3GPP-LTE downlinks
载波频率偏差 初始同步 整数频偏补偿 主同步信道序列 Carrier Frequency Offset Initial Synchronization Integer Frequency Offset Compensation Primary Synchronization Channel Sequence
摘要
主要研究在第3 代合作伙伴计划的长期演进(3GPP-LTE)下行链路低信噪比情况下，当手机终端晶振和基站之间存在较大的载波频率偏差(CFO)时，如何实现手机终端和基站的初始主同步，并提出了一种整数频偏(IFO)补偿后检测主同步信道(P-SCH)序列的具有鲁棒性的初始主同步算法。仿真结果表明提出的算法在低信噪比场景下能够达到较高的P-SCH 序列检测正确率和较低的载波频偏估计均方误差(MSE)。
Abstract
The initial synchronization problem for third Generation Partner Project(3GPP) Long Term Evolution(LTE) downlinks is studied, when there is a large Carrier Frequency Offset(CFO) between the base station and a mobile terminal working at a low Signal to Noise Ratio(SNR). A robust initial synchronization algorithm is proposed in detecting the Primary Synchronization Channel(P-SCH) sequence after the Integer Frequency Offset(IFO) compensation. Simulation results demonstrate that the proposed algorithm can achieve high detection probability for the P-SCH sequence and low Mean Square Error(MSE) of the CFO estimation at low SNR regions.
李先驰, 朱宇. 一种鲁棒的3GPP-LTE下行链路初始主同步算法[J]. 太赫兹科学与电子信息学报, 2016, 14(2): 212. LI Xianchi, ZHU Yu. A robust algorithm for the initial synchronization in 3GPP-LTE downlinks[J]. Journal of terahertz science and electronic information technology, 2016, 14(2): 212.
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