西安电子科技大学学报 ›› 2023, Vol. 50 ›› Issue (3): 75-82.doi: 10.19665/j.issn1001-2400.2023.03.007

• 面向IT3.0的感通算融合6G关键技术专题 • 上一篇    下一篇

感知信息辅助毫米波系统中的鲁棒收发机设计

李明睿(),陈力(),王卫东()   

  1. 中国科学技术大学 无线网络通信安徽省重点实验室,安徽 合肥 230027
  • 收稿日期:2022-11-23 出版日期:2023-06-20 发布日期:2023-10-13
  • 通讯作者: 陈力
  • 作者简介:李明睿(1998—),男,中国科学技术大学硕士研究生,E-mail:lmingr@mail.ustc.edu.cn;|王卫东(1967—),男,教授,E-mail:wdwang@ustc.edu.cn
  • 基金资助:
    国家自然科学基金(62071445)

Design of a sensing assisted robust transceiver in millimeter-wave systems

LI Mingrui(),CHEN Li(),WANG Weidong()   

  1. Wireless Information Network Lab,University of Science and Technology of China,Hefei 230027,China
  • Received:2022-11-23 Online:2023-06-20 Published:2023-10-13
  • Contact: Li CHEN

摘要:

感知辅助通信作为通信感知一体化技术的重要分支,通过利用大量的传感器数据,为毫米波信道环境特征的估计提供帮助。但是,受传感器精度的限制,在利用陀螺仪等传感器获取信道传播路径角度信息的过程中会存在一定的测量误差,进而导致波束方向的偏差以及通信性能的损失。针对感知信息的误差问题,提出了鲁棒收发机设计方案。首先针对静止与移动场景分别建立了角度测量误差与毫米波几何信道模型的关系;随后通过求解最大化频谱效率,得到了模拟波束赋形下的鲁棒收发机设计方案;最后通过二阶泰勒展开,给出了利用角度误差统计信息修正的鲁棒收发机闭式表达式。仿真结果表明,相比于直接使用角度信息观测值设计的收发机,所提鲁棒收发机设计能有效地减小因传感信息误差造成的频谱效率性能损失。在误差较大的情况下,能获得更好的性能。

关键词: 感知辅助通信, 波束赋形, 毫米波信道, 鲁棒收发机设计

Abstract:

As an important branch of integrated sensing and communications technology,sensing-assisted communication provides a great potential to help estimate the millimeter-wave channel by utilizing massive sensor data.However,due to the limitation of sensor accuracy,the path angle information obtained by sensors such as a gyroscope is imperfect,which causes the deviation of beam direction and performance loss.The design of a robust transceiver is proposed to cope with the measurement error of sensors.In this design,the relationship between the geometric channel model and angular measurement error is established for the static user and mobile user respectively.Based on the error model,the analog beamforming design is obtained by maximizing the spectral efficiency.The closed-form solution to a statistics modified robust transceiver is further derived with the help of second-order Tylor expansion.Simulation results show that the proposed design could efficiently reduce the spectral efficiency performance loss compared with the transceiver which directly uses the observed angle values.The robust transceiver could achieve a better performance with a large measurement error.

Key words: sensing-assisted communication, beamforming, millimeter-wave channel, robust transceiver design

中图分类号: 

  • TN928
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