A geometry-based stochastic MIMO model for vehicle-to-vehicle communications

Vehicle-to-vehicle (VTV) wireless communications have many envisioned applications in traffic safety and congestion avoidance, but the development of suitable communications systems and standards requires accurate models for the VTV propagation channel. In this paper, we present a new wideband multi...

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Bibliographic Details
Published in:IEEE transactions on wireless communications Vol. 8; no. 7; pp. 3646 - 3657
Main Authors: Karedal, J., Tufvesson, F., Czink, N., Paier, A., Dumard, C., Zemen, T., Mecklenbrauker, C.F., Molisch, A.F.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.07.2009
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
Applied sciences
Channel measurements
Channels
Communication standards
Communication system traffic
Communication systems
Detection, estimation, filtering, equalization, prediction
Diffraction, scattering, reflection
Doppler
Electrical Engineering, Electronic Engineering, Information Engineering
Elektroteknik och elektronik
Engineering and Technology
Exact sciences and technology
geometrical model
Highways
Information, signal and communications theory
MIMO
nonstationary
Parametrization
Radiocommunications
Radiowave propagation
Signal and communications theory
Signal, noise
Solid modeling
Standards development
statistical model
Stochastic processes
Stochasticity
Systems, networks and services of telecommunications
Teknik
Telecommunications
Telecommunications and information theory
Teletraffic
Traffic control
Transmission and modulation (techniques and equipments)
Vehicle safety
vehicular
Wideband
Wireless communication
Wireless communications
Sweden
Europe
Stochastic model
Parameter estimation
High resolution
Wireless telecommunication
statistical model
Wide band
Channel estimation
Traffic control
Rural area
Delay time
MIMO
Deterministic approach
Delayed time
Electromagnetic wave scattering
MIMO system
Target tracking
geometrical model
Transmission channel
Teletraffic
Non stationary condition
Algorithm
non-stationary
Electromagnetic wave propagation
Traffic management
Telecommunication system
Traffic safety
Channel measurements
vehicular
Delay line
Traffic congestion
Doppler
ISSN:1536-1276, 1558-2248
Online Access:Get full text
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Description
Summary:Vehicle-to-vehicle (VTV) wireless communications have many envisioned applications in traffic safety and congestion avoidance, but the development of suitable communications systems and standards requires accurate models for the VTV propagation channel. In this paper, we present a new wideband multiple-input-multiple-output (MIMO) model for VTV channels based on extensive MIMO channel measurements performed at 5.2 GHz in highway and rural environments in Lund, Sweden. The measured channel characteristics, in particular the nonstationarity of the channel statistics, motivate the use of a geometry-based stochastic channel model (GSCM) instead of the classical tapped-delay line model. We introduce generalizations of the generic GSCM approach and techniques for parameterizing it from measurements and find it suitable to distinguish between diffuse and discrete scattering contributions. The time-variant contribution from discrete scatterers is tracked over time and delay using a high resolution algorithm, and our observations motivate their power being modeled as a combination of a (deterministic) distance decay and a slowly varying stochastic process. The paper gives a full parameterization of the channel model and supplies an implementation recipe for simulations. The model is verified by comparison of MIMO antenna correlations derived from the channel model to those obtained directly from the measurements.
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ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2009.080753