[en] This paper investigates robust beamforming based
on statistical channel state information (sCSI), against satellite-toterrestrial
user terminal (UT) interference arising from spectrum
sharing in integrated terrestrial and satellite networks (ITSNs).
First, we develop an integral-form interference model to characterize
the interference from satellite to terrestrial base station
(BS) UTs. Then, we propose a robust interference avoidance (IA)
beamforming scheme under interference and power constraints.
A closed-form solution is derived based on the minimum mean
square error (MMSE) criterion, and a bisection method is
employed to meet the interference threshold. Furthermore, we
introduce a BS position-aided (PA) approximation scheme to
eliminate the complex integral calculations. Simulation results
validate the effectiveness of the proposed schemes.
Disciplines :
Computer science
Author, co-author :
CAO, Wenjing
WANG Yafei
WANG Wenjin
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
OTTERSTEN, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > PI Ottersten
External co-authors :
yes
Language :
English
Title :
Robust Beamforming Avoiding Satellite Interference in Integrated Terrestrial and Satellite Networks
Publication date :
2025
Event name :
VTC2025-Fall
Event organizer :
IEEE
Event place :
Chengdu, China
Event date :
19-22 October 2025
By request :
Yes
Audience :
International
Main work title :
Robust Beamforming Avoiding Satellite Interference in Integrated Terrestrial and Satellite Networks
Publisher :
IEEE
Peer reviewed :
Peer reviewed
Funders :
National Key R&D Program of China Jiangsu Province BasicResearch Project NSCF - National Natural Science Foundation of China Fundamental Research Funds for the Central Universitiesunder
