Robust Beamforming Design for Integrated Satellite-Terrestrial Maritime Communications in the Presence of Wave Fluctuation

TL;DR

This paper proposes a robust beamforming algorithm for integrated satellite-terrestrial maritime communications that accounts for wave-induced channel imperfections, aiming to reduce power consumption while ensuring QoS.

Contribution

It introduces a novel joint beamforming optimization method that is robust to sea wave fluctuations, enhancing system performance in maritime environments.

Findings

The proposed algorithm effectively minimizes power consumption.

Simulation results validate robustness against wave-induced channel errors.

System performance meets QoS requirements under realistic sea conditions.

Abstract

In order to provide wireless services for wide sea area, this paper designs an integrated satellite-terrestrial maritime communication framework. Specifically, the terrestrial base station (TBS) serves near-shore users, while the low earth orbit (LEO) satellite communicates with off-shore users. We aim to improve the overall performance of integrated satellite-terrestrial maritime communication system. Thus, it makes sense to jointly optimize transmit beamforming at the TBS and LEO satellite. Due to sea wave fluctuation, the obtained channel state information (CSI) is often imperfect. In this context, a robust beamforming design algorithm is proposed with the goal of minimizing the total power consumption of integrated satellite-terrestrial maritime communication system while satisfying quality of service (QoS) requirements. Both theoretical analysis and simulation results confirm the effectiveness of proposed algorithm in maritime communications.