基于多用户反馈的星地协作传输系统性能分析

doi:10.12305/j.issn.1001-506X.2021.04.27

Abstract

Abstract:

The performance of a multiuser hybrid satellite-terrestrial cooperative network (HSTCN) based on threshold-base multiuse feedback schem is investigated. By adopting the amplify-and-forward (AF) protocol in relay and multiuser opportunity scheduling scheme, the output signal to noise ratio (SNR) is obtained. Then, by assuming that the satellite links experience shadowing-Rician fading while the terrestrial links undergo Rayleigh fading, the closed-form expressions for feedback outage probability, ergodic capacity and the average number of feedback users with the threshold-based channel state information feedback method is derived. Finally, computer simulation not only verifies the correctness of the analytical results, but also proves that multiuser scheduling scheme with the threshold-based feedback can reduce the amount of system feedback greatly while the performance is almost unchanged.

Key words: hybrid satellite-terrestrial cooperative network, multiuser feedback, feedback outage probability, ergodic capacity, average number of feedback users

CLC Number:

TN927

Zuxia YUAN, Min LIN, Xiaoyu LIU, Zining WANG, Bo HUANG. Performance analysis of a hybrid satellite-terrestrial cooperative networks with multiuser feedback[J]. Systems Engineering and Electronics, 2021, 43(4): 1089-1098.

Figures/Tables 6

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References 25

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阴影类型	m	b	Ω
FHS	2	0.063	0.005
AS	5	0.251	0.279
ILS	10	0.158	1.29

参数	取值
P_{γ_th}	0.93	0.85	0.76	0.65	0.55	0.41
γ_th/dB	4.94	5.87	6.51	7.8	8.02	8.14
C_γ^AF	1.33	1.16	1.03	0.83	0.71	0.64

Performance analysis of a hybrid satellite-terrestrial cooperative networks with multiuser feedback

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