Robust Hybrid Beamforming for Satellite-Terrestrial Integrated Networks
Zhi Lin, Min Lin, Benoît Champagne, Wei-Ping Zhu, Naofal Al-Dhahir
Abstract
In this paper, we propose a novel robust downlink beamforming (BF) design for satellite-terrestrial integrated networks. Under a realistic assumption that the angular information of eavesdroppers is not perfectly known, we establish an optimization framework for hybrid BF at the terrestrial base station and digital BF at the satellite to maximize the secrecy-energy efficiency of the system, while satisfying the quality-of-service constraints of both earth station and cellular user. Since the formulated optimization problem is mathematically intractable, we present an iterative algorithm based on the Charnes-Cooper approach to optimize the BF weight vectors. The effectiveness and superiority of the proposed robust hybrid BF scheme are validated via computer simulations.
BibTeX
@inproceedings{icassp2020_robusthybridbeam,
title = {Robust Hybrid Beamforming for Satellite-Terrestrial Integrated Networks},
author = {Zhi Lin and Min Lin and Benoît Champagne and Wei-Ping Zhu and Naofal Al-Dhahir},
booktitle = {ICASSP 2020},
year = {2020}
}