Paper Info
Title
Outage Performance of NOMA-Based Cognitive Hybrid Satellite-Terrestrial Overlay Networks by Amplify-and-Forward Protocols.
Abstract
In this paper, we investigate the outage probability (OP) performance of amplify-and-forward (AF) cognitive hybrid satellite-terrestrial overlay networks (CHSTONs) with the non-orthogonal multiple access (NOMA) scheme, in which half-duplexing terrestrial secondary networks cooperate with a primary satellite network for dynamic spectrum access. In order to improve the fairness of overlay paradigm, a NOMA-based power allocation profile is determined by instantaneous channel conditions. Considering the generalized shadowed-Rician fading for satellite links and Nakagami-m fading for terrestrial links, we derive the closed-form OP expressions for both the primary and secondary users. Then, the asymptotic OP expressions at the high signal-to-noise ratio (SNR) regime are also obtained to evaluate the achievable diversity order and coding gain. Finally, the numerical simulations are provided to validate the theoretical results as well as the superiority of the NOMA scheme in CHSTONs and proclaim the effect of key parameters on the performance of the NOMA users, such as fading configurations and the power split factor.
Year
DOI
Venue
2019
10.1109/ACCESS.2019.2925314
IEEE ACCESS
Keywords
Field
DocType
Non-orthogonal multiple access (NOMA),cognitive hybrid satellite-terrestrial overlay networks (CHSTONs),outage probability
Noma,Satellite,Computer science,Computer network,Cognition,Overlay network
Journal
Volume
ISSN
Citations 
7
2169-3536
2
PageRank 
References 
Authors
0.37
0
8
Name
Order
Citations
PageRank
Xiao-kai Zhang1226.38
Bangning Zhang29527.44
Kang An324834.27
Zhuyun Chen421.72
Silin Xie520.71
Heng Wang641.74
Long Wang7146.32
Daoxing Guo86927.71