NDLI: Exact and asymptotic ergodic capacity analysis of the hybrid satellite–terrestrial cooperative system over generalised fading channels

Content Provider	IET Digital Library
Author	Zhao, Yue Chen, Huifang Xie, Lei Wang, Kuang
Abstract	In this study, the authors analyse the ergodic capacity of the downlink channel in a hybrid satellite–terrestrial cooperative system. The satellite link experiences shadowed Rician fading and the terrestrial link follows Rayleigh fading. Using the moment generating function-based approach, they derived the formulae for the ergodic capacity with the amplify-and-forward protocol or the decode-and-forward protocol. Moreover, the asymptotic expression for the ergodic capacity at a high signal-to-noise ratio is derived, and the system multiplexing gain is also obtained. Using the asymptotic results, they propose a simple relay selection strategy, which only requires the knowledge of channel statistics. Monte Carlo simulations are provided to confirm the analytical results, and to illustrate the effect of different factors, in terms of the number of relays, channel conditions, and the cooperative protocol, on the ergodic capacity. Numerical results show that the analytical results are highly accurate in the single relay scenario and have low computational complexity in the multi-relay scenario. In addition, the proposed relay selection strategy achieves low overhead in the price of a little performance degradation.
Starting Page	1342
Ending Page	1350
Page Count	9
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 11, Jul (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.0463
Journal	IET Communications
Publisher	The Institution of Engineering and Technology
Publisher Date	2018-03-21
Access Restriction	Open
Rights License	Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Subject Keyword	Amplify And Forward Communication Amplify-and-forward Protocol Asymptotic Ergodic Capacity Analysis Channel Capacity Channel Statistics Computational Complexity Cooperative Communication Decode-and-forward Protocol Diversity Reception Downlink Channel Error Statistics Exact Capacity Analysis Generalised Fading Channel Hybrid Satellite–terrestrial Cooperative System MIMO Communication Monte Carlo Method Protocol Rayleigh Channel Rayleigh Fading Relay Network Rician Channel Satellite Communication System Satellite Link Satellite Link Experiences Statistics System Multiplexing Gain Telecommunication Terrestrial Link
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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