面向载波聚合的FBMC系统多频偏联合估计

发布时间：2018-04-11 14:08

本文选题：滤波器组多载波 + 载波聚合　；参考：《计算机应用研究》2017年03期

【摘要】：针对面向载波聚合的滤波器组多载波(filter bank multicarrier,FBMC)系统中所存在的多频偏问题,提出一种适用于该系统的多频偏联合估计方法。根据FBMC系统符号重叠特性,每个分量载波上均采用训练序列构造周期性输出信号区间,依据多重信号特征分解理论,对输出信号区间协方差矩阵进行特征分解,通过构造频偏谱函数并进行峰值搜索得到多个频偏估计值,结合互相关函数完成多个频偏估计值分配过程。仿真结果表明,采用所提算法总体上可以将频偏估计的均方根误差控制在10-3左右。因此,该算法可以有效解决面向载波聚合的FBMC系统多频偏估计问题。
[Abstract]:Aiming at the problem of multi-frequency offset in multi-carrier filter bank multicarrier bank system, a joint multi-frequency offset estimation method for the system is proposed.According to the symbol overlap characteristic of FBMC system, the periodic output signal interval is constructed by training sequence on each component carrier, and the output signal interval covariance matrix is decomposed according to the theory of multi-multiple signal characteristic decomposition.The frequency offset spectrum function is constructed and the peak value search is carried out to obtain multiple frequency offset estimates, and the cross-correlation function is used to complete the allocation process of multiple frequency offset estimates.The simulation results show that the root-mean-square error of frequency offset estimation can be controlled to about 10 ~ (-3) by using the proposed algorithm.Therefore, the algorithm can effectively solve the problem of multi-frequency offset estimation for FBMC systems oriented to carrier aggregation.
【作者单位】：重庆邮电大学重庆移动通信重点实验室;
【基金】：重庆市教委科学技术研究项目(KJ1500435)
【分类号】：TN713;TN929.5

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