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Optimal beamforming for hybrid satellite terrestrial networks with nonlinear PA and imperfect CSIT

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Liu, Chengxiao, Feng, Wei, Chen, Yunfei, Wang, Cheng-Xiang and Ge, Ning (2020) Optimal beamforming for hybrid satellite terrestrial networks with nonlinear PA and imperfect CSIT. IEEE Wireless Communications Letters, 9 (3). pp. 276-280. doi:10.1109/LWC.2019.2952124

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Official URL: https://doi.org/10.1109/LWC.2019.2952124

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Abstract

In hybrid satellite-terrestrial networks (HSTNs), spectrum sharing is crucial to alleviate the “spectrum scarcity” problem. Therein, the transmit beams should be carefully designed to mitigate the inter-satellite-terrestrial interference. Different from previous studies, this letter considers the impact of both nonlinear power amplifier (PA) and large-scale channel state information at the transmitter (CSIT) on beamforming. These phenomena are usually inevitable in a practical HSTN. Based on the Saleh model of PA nonlinearity and the large-scale multi-beam satellite channel parameters, we formulate a beamforming optimization problem to maximize the achievable rate of the satellite system while ensuring that the inter-satellite-terrestrial interference is below a given threshold. The optimal amplitude and phase of desired beams are derived in a decoupled manner. Simulation results demonstrate the superiority of the proposed beamforming scheme.

Item Type: Journal Article
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Computer Science
Library of Congress Subject Headings (LCSH): Artificial satellites in telecommunication, Radio frequency allocation, Power amplifiers, Beamforming
Journal or Publication Title: IEEE Wireless Communications Letters
Publisher: IEEE
ISSN: 2162-2337
Official Date: March 2020
Dates:
DateEvent
March 2020Published
7 November 2019Available
21 October 2019Accepted
Volume: 9
Number: 3
Page Range: pp. 276-280
DOI: 10.1109/LWC.2019.2952124
Status: Peer Reviewed
Publication Status: Published
Publisher Statement: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
L172041Natural Science Foundation of Beijing Municipalityhttp://dx.doi.org/10.13039/501100004826
61771286[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
61701457[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
91638205[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
2242019R3000Fundamental Research Funds for the Central UniversitiesUNSPECIFIED
734325H2020 European Research Councilhttp://dx.doi.org/10.13039/100010663
UNSPECIFIEDBeijing Innovation Center for Future ChipUNSPECIFIED
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