计算机与数字工程2023，Vol.51Issue(11)：2493-2499,2504,8.DOI:10.3969/j.issn.1672-9722.2023.11.004
一种改进的5G新空口小区搜索检测算法
An Improved 5G New Radio Cell Search and Detection Algorithm
刘慧 1刘祖深 1许虎2
作者信息
- 1. 中北大学仪器与电子学院 太原 030051||中电科思仪科技(安徽)有限公司 蚌埠 233010
- 2. 中电科思仪科技(安徽)有限公司 蚌埠 233010||电子测量仪器技术蚌埠市技术创新中心 蚌埠 233010
- 折叠
摘要
Abstract
In 5G NR system,cell search is an indispensable process of time-frequency resource synchronous demodulation.The traditional synchronization algorithm has time-domain cross-correlation and piecewise correlation,the calculation is cumber-some,and the detection accuracy is reduced under high frequency deviation.Therefore,an improved PSS(Primary Synchronization Signal)detection algorithm is proposed in this paper.The local three groups of PSS sequences are superimposed correspondingly.According to the time-domain conjugate characteristics of PSS sequences,the conjugate correlation of the first half of the superim-posed sequences is taken,and the correlation results are segmented in frequency domain and then differentially accumulated.In ad-dition,in order to reduce the complexity of SSS(Secondary Synchronization Signal)detection,the traditional redundant cross-corre-lation is abandoned and Hadamard product operation is adopted.This algorithm reduces the amount of computation,reduces the in-fluence of frequency offset accumulation to a certain extent,and improves the anti-frequency offset ability of the system.In order to verify the performance of the algorithm,the proposed algorithm and the traditional algorithm are simulated and compared in AWGN(Additive White Gaussian Noise)channel.The simulation results show that the anti-frequency offset performance and detection effi-ciency of the proposed algorithm are significantly improved compared with the traditional algorithm.关键词
小区搜索/PSS/差分累加/SSS/哈达玛积Key words
cell search/PSS/differential accumulation/SSS/Hadamard plot分类
信息技术与安全科学引用本文复制引用
刘慧,刘祖深,许虎..一种改进的5G新空口小区搜索检测算法[J].计算机与数字工程,2023,51(11):2493-2499,2504,8.
