Journal of Xidian University ›› 2023, Vol. 50 ›› Issue (3): 75-82.doi: 10.19665/j.issn1001-2400.2023.03.007

• Special Issue on 6G Key Technologies for IT3.0 Based on the Integration of Communication,Sensing and Computing • Previous Articles     Next Articles

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 E-mail:lmingr@mail.ustc.edu.cn;chenli87@ustc.edu.cn;wdwang@ustc.edu.cn

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

CLC Number: 

  • TN928