DocumentCode :
1137505
Title :
A geometry-based stochastic MIMO model for vehicle-to-vehicle communications
Author :
Karedal, Johan ; Tufvesson, Fredrik ; Czink, Nicolai ; Paier, Alexander ; Dumard, Charlotte ; Zemen, Thomas ; Mecklenbräuker, Christoph F. ; Molisch, Andreas F.
Author_Institution :
Dept. of Electr. & Inf. Technol., Lund Univ., Lund, Sweden
Volume :
8
Issue :
7
fYear :
2009
fDate :
7/1/2009 12:00:00 AM
Firstpage :
3646
Lastpage :
3657
Abstract :
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.
Keywords :
MIMO communication; geometry; mobile radio; radiowave propagation; road safety; road traffic; stochastic processes; wireless channels; MIMO model; VTV propagation channel; congestion avoidance; discrete scattering; frequency 5.2 GHz; geometry-based stochastic channel model; high resolution algorithm; highway environment; rural environment; statistics; tapped-delay line model; time-variant contribution; traffic safety; vehicle-to-vehicle wireless communication; wideband multiple-input-multiple-output model; Communication standards; Communication system traffic; MIMO; Solid modeling; Standards development; Stochastic processes; Traffic control; Vehicle safety; Wideband; Wireless communication; Channel measurements, MIMO, vehicular, nonstationary, Doppler, geometrical model, statistical model.;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2009.080753
Filename :
5165328
Link To Document :
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