Doppler Spectrum Analysis of a Roadside Scatterer Model for Vehicle-to-Vehicle Channels: An Indirect Method

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • Gwangju Institute of Science and Technology
  • Continental

Abstract

In vehicle-to-vehicle (V2V) channels, such roadside scatterers (RSSs) as houses, buildings, trees, and many more, play a crucial role in the determination of the Doppler power spectral density (DPSD) characteristics. However, the relevant research results are scarce due to the lack of computationally tractable analytic DPSD solutions. To fill this gap, we investigate an indirect method for the DPSD analysis of a generic two-dimensional (2D) RSS model for V2V channels. The indirect method, based on the Hoeher’s theorem, employs successive transformations of random variables to obtain the DPSD. Compared to the conventional methods, leading to impractical multiple integral solutions, our method yields a single integral-form, more useful for analytic studies, model validation/parameter estimation, and fading simulator design. Using the new DPSD solution, the impact of different RSS layouts on the DPSD characteristics is further investigated, and several new insights are provided. The joint probability density function (PDF) of angle-of-departure and angle-of-arrival (AoA) and the joint Doppler-AoA PDF are newly presented in closed-forms and analyzed with respect to the DPSD shape. Comparisons with the DPSDs measured in highway and urban canyon environments demonstrate not only the validity of the generic 2D RSS model, but also the significant contribution of RSSs to V2V channels.

Details

Original languageEnglish
Pages (from-to)8007 - 8021
Number of pages15
JournalIEEE Transactions on Wireless Communications
Volume17
Issue number12
Early online date1 Jan 2018
Publication statusPublished - Dec 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • Analytical models, Computational modeling, Doppler effect, Doppler frequency probability density function, Doppler power spectral density, DPSD, GBSCM, geometry-based stochastic channel model, Random variables, Roads, roadside scatterer, RSS, RSS model, Two dimensional displays, vehicle-to-vehicle channels, Wireless communication

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