Optimal Power Control in Cognitive Satellite Terrestrial Networks with Imperfect Channel State Information.pdf (216.05 kB)
Optimal power control in cognitive satellite terrestrial networks with imperfect channel state information
journal contribution
posted on 2018-08-13, 10:41 authored by Shengchao Shi, Kang An, Guangxia Li, Zhiqiang Li, Hongpeng Zhu, Gan ZhengTo address the spectrum scarcity in future satellite communications, employing the cognitive technique in the satellite systems is considered as a promising candidate, which leads to an advanced architecture known as cognitive satellite terrestrial networks. Power control is a significant research challenge in cognitive satellite terrestrial networks, especially when the perfect channel state information (CSI) of satellite or terrestrial links is unavailable. In this context, we investigate the impact of imperfect CSI of both desired satellite link and harmful terrestrial interference link on the power control scheme in cognitive satellite terrestrial networks. By adopting a pilot-based channel estimation of satellite link and a back-off interference power constraint of terrestrial interference link, a novel power control scheme is presented to maximize the outage capacity of the satellite user while guaranteeing the communication quality of primary terrestrial user. Extensive numerical results quantitatively demonstrate the effect of various system parameters on the proposed power control scheme in cognitive satellite terrestrial networks with imperfect CSI.
Funding
The work of S. Shi, K. An, G. Li, Z. Li, and H. Zhu was supported by the National Natural Science Foundations of China under Grant 61571464, Grant 61601511, Grant 91338201, Grant 91438109, and Grant 61401507. The work of G. Zheng was supported by the U.K. EPSRC under Grant EP/N007840/1.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
IEEE Wireless Communications LettersVolume
7Issue
1Pages
34 - 37Citation
SHI, S. ... et al, 2017. Optimal power control in cognitive satellite terrestrial networks with imperfect channel state information. IEEE Wireless Communications Letters, 7 (1), pp.34-37.Publisher
© IEEEVersion
- AM (Accepted Manuscript)
Acceptance date
2017-09-11Publication date
2017-09-14Notes
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.ISSN
2162-2337eISSN
2162-2345Publisher version
Language
- en