Coarse Frequency Offset and Primary Synchronization Signal Joint Detection Based on Time Division Uniform Extraction and Frequency Domain Parallel Processing for 5G Nonterrestrial Network Systems

IF 1.7 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Communication Systems Pub Date : 2025-04-15 DOI:10.1002/dac.70088

Jingze Yu, Cheng Ju, Dongdong Wang, Na Liu, Chunyao Chen, Jiamin Fan

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引用次数: 0

Abstract

Rapid detection of the primary synchronization signal (PSS) and accurate coarse frequency offset detection is critical in time–frequency synchronization in 5G nonterrestrial network (NTN) communication systems. However, the Doppler frequency offset (DFO) caused by the rapid movement of low Earth orbit (LEO) satellites requires multiple parallel real-time calculations for PSS detection and coarse frequency offset compensation at ground terminals, which consumes a lot of hardware logic resources if the algorithms based on sliding cross-correlation operation is used for PSS detection. In this work, a coarse frequency offset and PSS joint detection based on time division uniform extraction and frequency domain parallel processing is proposed, which can significantly reduce the complexity while ensuring performance. The offline FPGA verification results indicate that the proposed scheme can be effectively applied with extremely low complexity in the presence of severe DFO, where existing alternatives provide unsatisfactory complexity.

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基于时分均匀提取和频域并行处理的5G非地面网络系统粗频偏和一次同步信号联合检测

快速检测主同步信号（PSS）和精确粗频偏检测是5G非地面网络（NTN）通信系统时频同步的关键。然而，由于近地轨道卫星快速运动引起的多普勒频偏（DFO）需要对PSS检测进行多次并行实时计算，并在地面终端进行粗频偏补偿，如果采用基于滑动互相关运算的PSS检测算法，会消耗大量硬件逻辑资源。本文提出了一种基于时分均匀提取和频域并行处理的粗频偏和PSS联合检测方法，在保证检测性能的同时显著降低了检测复杂度。离线FPGA验证结果表明，在存在严重DFO的情况下，该方案可以以极低的复杂度有效地应用，而现有方案的复杂度不令人满意。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Communication Systems 工程技术-电信学

CiteScore

5.90

自引率

9.50%

发文量

323

审稿时长

7.9 months

期刊介绍： The International Journal of Communication Systems provides a forum for R&D, open to researchers from all types of institutions and organisations worldwide, aimed at the increasingly important area of communication technology. The Journal''s emphasis is particularly on the issues impacting behaviour at the system, service and management levels. Published twelve times a year, it provides coverage of advances that have a significant potential to impact the immense technical and commercial opportunities in the communications sector. The International Journal of Communication Systems strives to select a balance of contributions that promotes technical innovation allied to practical relevance across the range of system types and issues. The Journal addresses both public communication systems (Telecommunication, mobile, Internet, and Cable TV) and private systems (Intranets, enterprise networks, LANs, MANs, WANs). The following key areas and issues are regularly covered: -Transmission/Switching/Distribution technologies (ATM, SDH, TCP/IP, routers, DSL, cable modems, VoD, VoIP, WDM, etc.) -System control, network/service management -Network and Internet protocols and standards -Client-server, distributed and Web-based communication systems -Broadband and multimedia systems and applications, with a focus on increased service variety and interactivity -Trials of advanced systems and services; their implementation and evaluation -Novel concepts and improvements in technique; their theoretical basis and performance analysis using measurement/testing, modelling and simulation -Performance evaluation issues and methods.