TY - GEN
T1 - Location-Based Broad-Range Null-Steering in V2X Multiuser MIMO Transmission
AU - Sasaki, Yuki
AU - Ozawa, Sojin
AU - Arai, Kabuto
AU - Nakazato, Jin
AU - Tsukada, Manabu
AU - Maruta, Kazuki
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This paper proposes an intensive null-steering around the target in angular domain to effectively suppress inter-user interference (IUI) leakage caused by channel varying environment such as vehicular multiuser spatial multiplexing. Multiuser MIMO can enhance spectral efficiency by multiplexing a number of user terminals in spatial domain. Suppose applying multiuser MIMO downlink in vehicle-to-everything (V2X) scenario, vehicles move at high speed which causes IUI. Null-space expansion has been conceived that can improve IUI suppression capability by steering nulls to the past and the present channel states on interfered users. Collective perception in intelligent transport systems (ITS) provides location information of vehicles every 100 ms. Exploiting this feature, this paper proposes angular-domain null-space expansion; broad-range null-steering (BRNS). Computer simulation verifies its effectiveness.
AB - This paper proposes an intensive null-steering around the target in angular domain to effectively suppress inter-user interference (IUI) leakage caused by channel varying environment such as vehicular multiuser spatial multiplexing. Multiuser MIMO can enhance spectral efficiency by multiplexing a number of user terminals in spatial domain. Suppose applying multiuser MIMO downlink in vehicle-to-everything (V2X) scenario, vehicles move at high speed which causes IUI. Null-space expansion has been conceived that can improve IUI suppression capability by steering nulls to the past and the present channel states on interfered users. Collective perception in intelligent transport systems (ITS) provides location information of vehicles every 100 ms. Exploiting this feature, this paper proposes angular-domain null-space expansion; broad-range null-steering (BRNS). Computer simulation verifies its effectiveness.
UR - http://www.scopus.com/inward/record.url?scp=85189203305&partnerID=8YFLogxK
U2 - 10.1109/CCNC51664.2024.10454730
DO - 10.1109/CCNC51664.2024.10454730
M3 - Conference contribution
AN - SCOPUS:85189203305
T3 - Proceedings - IEEE Consumer Communications and Networking Conference, CCNC
SP - 1070
EP - 1071
BT - 2024 IEEE 21st Consumer Communications and Networking Conference, CCNC 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st IEEE Consumer Communications and Networking Conference, CCNC 2024
Y2 - 6 January 2024 through 9 January 2024
ER -