The millimeter wave (mmWave) technology is poised to play a significant role in the upcoming generation of wireless communication and high-precision sensing systems. However, mmWave technology exhibits higher path loss compared to low-frequency alternatives, necessitating the development of beamforming methods with large array sizes to enhance array gain. Existing approaches assume that the signal phases corresponding to different incident angles are identical. Unfortunately, this assumption does not hold in practical mmWave applications. This paper addresses the issue of phase instability in mmWave arrays and formulates a system model to characterize arrays affected by phase instability (PIA) by incorporating the random characteristics of received signals associated with various incident angles. Subsequently, a performance loss caused by phase instability is quantified by defining a ratio between the beamforming gain of a perfect array and that of a PIA. The paper further derives a theoretical distribution to describe the gain loss in mmWave scenarios utilizing PIA. Finally, simulation results are presented to demonstrate the gain loss in PIA, and the theoretical findings align well with the simulations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    On The Limitation of mmWave Beamforming Using Phase-Instability Array


    Contributors:
    Chen, Peng (author) / Yu, Feiqiao (author) / Sun, Mengjiang (author) / Luo, Tao (author) / Zhao, Yangying (author) / Chen, Zhimin (author)


    Publication date :

    2023-10-10


    Size :

    1497814 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English