Design and optimization for polar coded cooperative transmission in satellite-based NTN

doi:10.23919/JSEE.2026.000134

Abstract

Abstract:

Non-terrestrial network (NTN) possesses ubiquitous coverage and access capability, which needs high-reliability and high-throughput transmission supported by the advanced channel coding. In this paper, a cooperative transmission and optimization scheme is proposed based on polar codes in NTN. Firstly, the transmission system model is designed. Then the polar coded cooperation method among the cooperative satellite nodes (CSN) and destination is provided in Rayleigh slow fading channel. Moreover, to improve the overall error probability performance and throughput efficiency, the key coding rate and power allocation of CSN are jointly optimized using multiobjective reinforcement learning algorithm. Finally, simulation and analysis demonstrate the validity of our approach and show the error-correcting performance and throughput advantages of the proposed cooperative transmission scheme in NTN.

Key words: coded cooperation, polar code, joint optimization, reinforcement learning, non-terrestrial network (NTN)

Shijun Xie, Hao Liang, Liping Li, Jintian Xiong, Sili Liu. Design and optimization for polar coded cooperative transmission in satellite-based NTN[J]. Journal of Systems Engineering and Electronics, 2026, 37(4): 1177-1185.

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References 17

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uSNR of (S₁,S₂)/dB	(0,4)	(4,8)	(8,10)	(12,14)
Opt_R₀	0.10	0.10	0.60	0.75
Opt_(P₁,P₂)	(1.15,0.85)	(1.20,0.80)	(1.40,0.60)	(1.25,0.75)

uSNR of (S₁,S₂)/dB	(0,4)	(4,8)	(8,10)	(12,14)
Opt_R₀	0.55	0.65	0.80	0.90
Opt_(P₁,P₂)	(1.05,0.95)	(1.2,0.80)	(1.10,0.90)	(1.15,0.85)

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