基于网络辅助全双工技术的去蜂窝大规模MIMO系统性能分析

李琨迪; 倪艺洋; 赵海涛; 夏文超; 孙文雪

doi:10.11959/j.issn.2096-3750.2025.00453

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基于网络辅助全双工技术的去蜂窝大规模MIMO系统性能分析

理论与技术 | 更新时间：2025-07-29

- 基于网络辅助全双工技术的去蜂窝大规模MIMO系统性能分析
- Analysis on the performance of cell-free massive MIMO system with network-assisted full duplexing
- 物联网学报 2025年9卷第2期页码：161-171
- 作者机构：
  
  1.南京邮电大学，江苏南京 210003
  2.南京邮电大学，江苏省无线通信重点实验室，江苏南京 210003
  3.江苏第二师范学院，江苏南京 210003
- 作者简介：
  
  [ "李琨迪（1999‒ ），男，南京邮电大学硕士生，主要研究方向为去蜂窝大规模MIMO系统性能分析与优化、低能耗无线通信等。" ]
  [ "倪艺洋（1986‒ ），女，博士，南京邮电大学教授、硕士生导师，主要研究方向为人工智能在无线通信中的应用、可重构智能反射表面、去蜂窝大规模MIMO、未来网络与资源分配等。" ]
  [ "赵海涛（1983‒ ），男，博士，南京邮电大学教授、博士生导师，主要研究方向为物联网、车联网、智能网络、多媒体信道建模、容量预测、无线网络编码等。" ]
  [ "夏文超（1991‒ ），男，博士，南京邮电大学副教授、硕士生导师，主要研究方向为边缘智能无线通信、通感一体化、大规模MIMO等。" ]
  [ "孙文雪（1998‒ ），女，南京邮电大学博士生，主要研究方向为可重构智能反射表面、车联网通信、大规模MIMO等。" ]
- 基金信息：
  
  国家自然科学基金资助项目(92367302;62471204);江苏省高校自然科学研究重大项目(24KJA510003)
- DOI：10.11959/j.issn.2096-3750.2025.00453
  中图分类号： TN929
- 收稿日期：2024-10-28，
  
  修回日期：2024-11-30，
  
  纸质出版日期：2025-06-10
- 稿件说明：
移动端阅览
李琨迪,倪艺洋,赵海涛等.基于网络辅助全双工技术的去蜂窝大规模MIMO系统性能分析[J].物联网学报,2025,09(02):161-171.

LI Kundi,NI Yiyang,ZHAO Haitao,et al.Analysis on the performance of cell-free massive MIMO system with network-assisted full duplexing[J].Chinese Journal on Internet of Things,2025,09(02):161-171.
李琨迪,倪艺洋,赵海涛等.基于网络辅助全双工技术的去蜂窝大规模MIMO系统性能分析[J].物联网学报,2025,09(02):161-171. DOI： 10.11959/j.issn.2096-3750.2025.00453.

LI Kundi,NI Yiyang,ZHAO Haitao,et al.Analysis on the performance of cell-free massive MIMO system with network-assisted full duplexing[J].Chinese Journal on Internet of Things,2025,09(02):161-171. DOI： 10.11959/j.issn.2096-3750.2025.00453.

摘要

随着物联网朝着低功耗和高速率不断演进，全双工去蜂窝大规模多输入多输出（CF-mMIMO

cell-free massive multiple input multiple output）网络因潜在的巨大信道容量而备受关注。为有效降低全双工网络中自干扰消除和完美硬件配置造成的高昂基础设施成本和额外的功率消耗，研究了莱斯衰落信道下基于网络辅助全双工（NAFD

network-assisted full duplexing）技术的去蜂窝大规模MIMO系统性能。考虑不完美信道估计，推导了低分辨率数模转换器（DAC

digital-to-analog converter）下总可达速率和频谱效率（SE

spectral efficiency）的闭合表达式下界，并基于不同的传输功率和射频（RF

radio frequency）天线数目进行了验证。利用这一解析解，定量分析了DAC分辨率以及终端数量等参数对传输性能的影响。仿真结果表明，在接入单元处配备4~6位的DAC代替完美的DAC以微小的容量损失满足了能源物联网中对低功耗传输的迫切需求。

Abstract

As the Internet of things evolves towards low-power consumption and high speed

full duplex cell-free massive multiple input multiple output (CF-mMIMO) networks have gained significant attention

because of the potential for huge channel capacities. In order to effectively reduce the high infrastructure costs and additional power consumption resulting from self-interference cancellation and perfect hardware in full-duplex networks

the research on the performance of CF-mMIMO systems based on network-assisted full duplexing (NAFD) technology under Rician fading channels was explored. Considering imperfect channel estimation

the lower bounds of closed-form expressions for the total achievable rate and spectral efficiency (SE) under low-resolution digital-to-analog converter (DAC) were derived and validated across varying transmission powers and numbers of radio frequency (RF) antennas. With the help of this analytical solution

the effect of parameters

such as DAC resolution and number of terminals on transmission performance

were quantitatively analyzed. Simulation results indicate that equipping a 4~6 bit DAC at the access unit instead of a perfect DAC meets the urgent need for the low-power transmission of the Internet of energy things with only a minimal loss in capacity.

关键词

Keywords

references

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