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Mobile Information Systems
Volume 2017, Article ID 7231417, 14 pages
https://doi.org/10.1155/2017/7231417
Research Article

Three-Dimensional Vehicle-to-Vehicle Channel Modeling with Multiple Moving Scatterers

College of Communication Engineering, Chongqing University, Chongqing 400044, China

Correspondence should be addressed to Xin Jian; moc.361@gz_nixnaij

Received 30 November 2016; Revised 9 April 2017; Accepted 3 May 2017; Published 10 July 2017

Academic Editor: Barbara M. Masini

Copyright © 2017 Derong Du 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

Connected vehicles have received much attention in recent years due to their significant societal benefit and commercial value. However, a suitable channel model for vehicle-to-vehicle (V2V) communications is difficult to build due to the dynamic communication environment. In this paper, a three-dimensional (3D) geometrical propagation model that includes line-of-sight (LoS), single bounced (SB), and multiple bounced (MB) rays is proposed. Each of multiple scatterers in the model is moving with a random velocity in a random direction. Based on the geometrical propagation model, a generalized 3D reference model for narrowband multiple-input-multiple-output (MIMO) V2V multipath fading channels is developed. The corresponding space-time correlation functions (ST-CFs), time correlation functions (T-CFs), and space correlation functions (S-CFs) are analytically investigated and numerically simulated in terms of various factors. Several notable ST-CFs for V2V and fixed-to-mobile (F2M) communications become the special cases of ST-CFs of the proposed model by adjusting the corresponding channel parameters. Finally, the theoretical results of the space-Doppler power spectral density (SD-PSD) are compared with the available measured data. The close agreements between the theoretical and measured SD-PSD curves confirm the utility and generality of the proposed model.