摘要
大规模多输入多输出正交频分复用(Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing,MIMO-OFDM)系统对同步性能具有极高的要求,本文在循环前缀(cyclic prefix,CP)的基础之上结合循环后缀思想,对CP结构进行改进,并引入伪随机序列对算法进行改进,进而得到较为精确的定时同步值及频率偏移值。通过仿真表明,改进的CP结构及算法使系统的同步性能得到了一定的提高。
Massive multiple input multiple output orthogonal frequency division multiplexing(MIMOOFDM)system has extremely high requirements for synchronization performance.Based on the cyclic prefix(CP),this paper improves the structure of CP with the idea of cyclic suffix,and introduces the pseudo-random sequence to improve the algorithm.Then the more accurate timing synchronization value and frequency offset value are obtained.The simulation results show that the improved CP structure and algorithm can improve the synchronization performance of the system..
作者
宋冬梅
SONG Dong-mei(Rugao People's Hospital,Nantong 226500,China)
出处
《无线通信技术》
2020年第1期11-14,共4页
Wireless Communication Technology
作者简介
宋冬梅(1990-),女,硕士研究生,主要研究方向:无线通信。
