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Wireless Communications and Mobile Computing
Volume 2017 (2017), Article ID 4859835, 13 pages
https://doi.org/10.1155/2017/4859835
Research Article

Performance Analysis of Space Information Networks with Backbone Satellite Relaying for Vehicular Networks

Communication Engineering Research Centre, Harbin Institute of Technology, Shenzhen, Guangdong, China

Correspondence should be addressed to Shaohua Wu

Received 9 September 2017; Accepted 15 November 2017; Published 10 December 2017

Academic Editor: Tao Han

Copyright © 2017 Jian Jiao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Space Information Network (SIN) with backbone satellites relaying for vehicular network (VN) communications is regarded as an effective strategy to provide diverse vehicular services in a seamless, efficient, and cost-effective manner in rural areas and highways. In this paper, we investigate the performance of SIN return channel cooperative communications via an amplify-and-forward (AF) backbone satellite relaying for VN communications, where we assume that both of the source-destination and relay-destination links undergo Shadowed-Rician fading and the source-relay link follows Rician fading, respectively. In this SIN-assisted VN communication scenario, we first obtain the approximate statistical distributions of the equivalent end-to-end signal-to-noise ratio (SNR) of the system. Then, we derive the closed-form expressions to efficiently evaluate the average symbol error rate (ASER) of the system. Furthermore, the ASER expressions are taking into account the effect of satellite perturbation of the backbone relaying satellite, which reveal the accumulated error of the antenna pointing error. Finally, simulation results are provided to verify the accuracy of our theoretical analysis and show the impact of various parameters on the system performance.