波束扫描下5G毫米波小区搜索算法

申敏; 梁晶; 侯嘉智

doi:10.11959/j.issn.1000-0801.2020157

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波束扫描下5G毫米波小区搜索算法

研究与开发 | 更新时间：2024-06-05

- 波束扫描下5G毫米波小区搜索算法
- 5G millimeter wave cell search algorithm with beam sweeping
- 电信科学 2020年36卷第6期页码：97-106
- 作者机构：
- 作者简介：
  
  [ "申敏（1963- ），女，教授，重庆邮电大学博士生导师，主要研究方向为新一代宽带移动通信系统、通信核心芯片、协议与系统应用技术" ]
  [ "梁晶（1994- ），女，重庆邮电大学硕士生，主要研究方向为5G物理层小区搜索" ]
  [ "侯嘉智（1993- ），男，重庆邮电大学硕士生，主要研究方向为移动通信波束管理" ]
- 基金信息：
  
  国家科技重大专项基金资助项目;The National Science and Technology Major Project(2018ZX03001026-002)
- DOI：10.11959/j.issn.1000-0801.2020157
  中图分类号： TN929.5
- 网络出版日期：2020-06，
  
  纸质出版日期：2020-06-20
- 稿件说明：
移动端阅览
申敏, 梁晶, 侯嘉智. 波束扫描下5G毫米波小区搜索算法[J]. 电信科学, 2020,36(6):97-106.

Min SHEN, Jing LIANG, Jiazhi HOU. 5G millimeter wave cell search algorithm with beam sweeping[J]. Telecommunications science, 2020, 36(6): 97-106.
申敏, 梁晶, 侯嘉智. 波束扫描下5G毫米波小区搜索算法[J]. 电信科学, 2020,36(6):97-106. DOI： 10.11959/j.issn.1000-0801.2020157.

Min SHEN, Jing LIANG, Jiazhi HOU. 5G millimeter wave cell search algorithm with beam sweeping[J]. Telecommunications science, 2020, 36(6): 97-106. DOI： 10.11959/j.issn.1000-0801.2020157.

摘要

5G毫米波的载波频率高，初始接入频偏大，可能导致收发端时频同步不准确及物理小区标识检测错误问题。针对此问题，分析并仿真了5G毫米波在高频偏下基于波束扫描方式发送同步信号的小区搜索方案。提出了一种在基站侧使用DFT码本发送多方向的同步信号块，在终端用全向天线接收多波束信号并使用一系列同步算法完成时间、频率同步及物理小区标识检测的5G毫米波小区搜索过程。仿真结果表明，所提预存整数倍频偏与接收信号互相关的主同步信号检测算法在5G毫米波信道有良好的小区搜索性能。

Abstract

Due to the high carrier frequency of the 5G millimeter wave

a large initial access frequency may cause inaccurate time-frequency synchronization at the transmitting and receiving ends and incorrect detection of the physical layer cell identifier.A cell search scheme for 5G millimeter waves to send synchronization signals in a beam sweeping mode at high frequencies was analyzed and simulated.Specifically

a multi-directional synchronization signal block sent by a DFT codebook at the base station side was proposed.The terminal used an omnidirectional antenna to receive multi-beam signals and used a series of synchronization algorithms to complete time

frequency synchronization

and physical layer cell identification.Simulation results show that the proposed main synchronization signal detection algorithm with cross-correlation of pre-stored integer frequency offset and received signal has good cell search performance on 5G millimeter-wave channels.

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references

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UFMC系统中的载波频率同步技术