Research on High Precision Ranging and Positioning Based on GFDM Signal for B5G/6G

SU Lin-lin; CHEN Liang; CHEN Fei-fei; ZHOU Xin; JIAO Zhen-hang; LIU Zhao-liang

doi:10.12263/DZXB.20211185

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Research on High Precision Ranging and Positioning Based on GFDM Signal for B5G/6G

INTELLIGENT TIME-SPATIAL INFORMATION SERVICE TECHNOLOGY | 更新时间：2025-12-08

- Research on High Precision Ranging and Positioning Based on GFDM Signal for B5G/6G
- ACTA ELECTRONICA SINICA Vol. 50, Issue 4, Pages: 849-859(2022)
- 作者机构：
  
  武汉大学测绘遥感信息工程国家重点实验室，湖北武汉 430079
- 作者简介：
- 基金信息：
- DOI：10.12263/DZXB.20211185
  CLC： TN929.5;TN961
- Received：31 August 2021，
  
  Revised：2022-01-10，
  
  Published：25 April 2022
- 稿件说明：
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苏林林,陈亮,陈菲菲等.面向B5G/6G的GFDM信号高精度测距与定位研究[J].电子学报,2022,50(04):849-859.

SU Lin-lin,CHEN Liang,CHEN Fei-fei,et al.Research on High Precision Ranging and Positioning Based on GFDM Signal for B5G/6G[J].ACTA ELECTRONICA SINICA,2022,50(04):849-859.
苏林林,陈亮,陈菲菲等.面向B5G/6G的GFDM信号高精度测距与定位研究[J].电子学报,2022,50(04):849-859. DOI： 10.12263/DZXB.20211185.

SU Lin-lin,CHEN Liang,CHEN Fei-fei,et al.Research on High Precision Ranging and Positioning Based on GFDM Signal for B5G/6G[J].ACTA ELECTRONICA SINICA,2022,50(04):849-859. DOI： 10.12263/DZXB.20211185.

摘要

广义频分复用（Generalized Frequency Division Multiplexing，GFDM）技术是在正交频分复用（Orthogonal Frequency Division Multiplexing，OFDM）技术基础上发展而来的一种新的多载波调制技术，其特点是子载波非正交以及具有灵活的时频资源配置.GFDM作为目前研究的主流波形，有望成为B5G（Beyond Fifth-Generation）或者6G（Sixth-Generation）时代移动通信技术的新的波形设计.本文提出了基于GFDM信号的高精度载波测距方法，其主要包括GFDM信号粗同步、导频检测、多径提取、首径获取、延迟跟踪和载波相位测距等步骤.在此基础上，利用GFDM信号测距信息进行了室内定位性能评估.在典型室内会议场景下搭建了实测平台并对上述方法进行了验证.测试结果表明，通过所提方法，利用GFDM信号测距精度达到1.1 m（95%），定位精度优于2 m，相比于相同带宽的OFDM信号测距性能提高了21%.本文研究将为下一代移动通信室内定位技术提供有益参考.

Abstract

Generalized frequency division multiplexing(GFDM) is a novel multi-carrier modulation technology with the characteristics of subcarrier non-orthogonality and flexibility of time-frequency resources. GFDM is expected to become a new waveform design of mobile communication technology in the beyond fifth-generation(B5G) or sixth-generation(6G) era. This paper proposes a high-precision carrier ranging method based on GFDM signal

which mainly includes steps of coarse synchronization

pilot detection

multipath extraction

first path acquisition

delay tracking and carrier phase ranging. To verify the above-mentioned method

we built an experimental platform in typical indoor meeting scenarios. Test results showed that using GFDM signals the probability of ranging accuracy within 1.1 m is 95%

which is 21% better than the ranging performance of OFDM signals with the same bandwidth. In addition

the positioning error interval of GFDM is within 2 m. The research in this paper provides a useful reference for next-generation mobile communication indoor positioning technology.

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references

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