Robust Resource Allocation Algorithm for Low Orbit Satellite Communication System Based on Imperfect CSI

WU Cuixian; DONG Yiheng; XU Yongjun; ZHANG Haibo; XUE Qing

doi:10.11999/JEIT230086

Volume 46 Issue 2

Feb. 2024

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Article Navigation > Journal of Electronics & Information Technology > 2024 > 46(2): 671-679

WU Cuixian, DONG Yiheng, XU Yongjun, ZHANG Haibo, XUE Qing. Robust Resource Allocation Algorithm for Low Orbit Satellite Communication System Based on Imperfect CSI[J]. Journal of Electronics & Information Technology, 2024, 46(2): 671-679. doi: 10.11999/JEIT230086

Citation:

WU Cuixian, DONG Yiheng, XU Yongjun, ZHANG Haibo, XUE Qing. Robust Resource Allocation Algorithm for Low Orbit Satellite Communication System Based on Imperfect CSI[J]. Journal of Electronics & Information Technology, 2024, 46(2): 671-679. doi: 10.11999/JEIT230086

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Robust Resource Allocation Algorithm for Low Orbit Satellite Communication System Based on Imperfect CSI

doi: 10.11999/JEIT230086

WU Cuixian¹,
DONG Yiheng¹,
XU Yongjun^{1, 2
,
,},
ZHANG Haibo^{1, 2},
XUE Qing¹

1.
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2.
Zhejiang Provincial Key Laboratory of Information Processing, Communication and Networking, Zhejiang 310058, China

Funds: The National Natural Science Foundation of China (62271094, U21A20448), The Scientific and Technological Research Program of Chongqing Municipal Education Commission (KJZD-K202200601), The Key Fund of Natural Science Foundation of Chongqing (CSTB2022NSCQ-LZX0009), The Open Project of Zhejiang Provincial Key Laboratory of Information Processing, Communication and Networking (IPCAN-2302, IPCAN-2303)

Received Date: 2023-02-22
Rev Recd Date: 2023-07-13

Available Online: 2023-07-19

Publish Date: 2024-02-29

Abstract

Abstract

In order to solve the imbalance problem between power consumption and transmission in low orbit satellite communication systems caused by the limited resource, a robust resource allocation algorithm is proposed to maximize the minimum energy efficiency of multiple users by considering the effect of channel uncertainties on the performance degradation of real satellite communication systems. Firstly, a robust resource allocation model with Gaussian channel uncertainties is formulated by jointly optimizing the beamforming vectors and power allocation factors of the multi-beam satellite, meanwhile the outage rate constraint of each user, the power allocation factor constraint and the maximum transmit power constraint are considered simultaneously. The formulated problem is a non-convex and NP-hard with parametric perturbation, which is difficult to solve it directly. To this end, the original problem is converted into a convex one by using Dinkelbach’s method, Bernstein-type inequality, semi-definite relaxation and the alternating optimization technique, and an iteration-based hybrid robust beamforming and power allocation algorithm is proposed. Simulation results verify that the proposed algorithm has good energy efficiency and strong robustness.
- Low orbit satellite communication,
- Beamforming,
- Energy-efficient optimization,
- Robustness

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References(23)

References

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