Summary
ASPIRE Workshop
2024
Session Number:P
Session:
Number:P-19
Laboratory Experiment of Broad-Range Null-Steering for Millimeter-Wave V2I Multiuser MIMO
Sojin Ozawa, Yuki Sasaki, Ryo Iwaki, Jin Nakazato, Manabu Tsukada, Kazuki Maruta,
pp.-
Publication Date:2024/03/05
Online ISSN:2188-5079
Summary:
This paper demonstrates the practical effectiveness of our proposed broad-range null-steering (BRNS) scheme through indoor experiment using 28-GHz band 4-element array antenna transmission system.For realization of cooperative automated driving, use of millimeter-wave band and multiuser multiple-input multiple-output (MIMO) are essential.
However, inter-user interference is an challenging issue to perform spatial multiplexing under mobility environment due to outdated channel state information (CSI).
BRNS was previously proposed that additionally nullifies around interfering users based on geometrical information of vehicles that can be obtained through cooperative awareness message (CAM).
Its effectiveness have been confirmed through computer simulations, supposing cooperative automated operation in V2X.
Our laboratory-experimental result confirms null-steering range can be expanded.