Geometry-based stochastic modeling and estimation of vehicle to vehicle channels

In this paper, a geometry-based stochastic channel model (GSCM) for vehicle-to-vehicle (V2V) wireless communication is developed. The channel model reveals that the channel representation in delay-Doppler domain can be divided into four regions. In each region, the V2V channel can be modeled using a hybrid sparse/diffuse (HSD) model. Prior art on hybrid channel estimation for linear time-invariant channels is extended to the time-varying case. Furthermore, the effects of pulse shape leakage are explicitly determined and compensated. Simulation results shows that exploiting the V2V channel properties in the delay-Doppler domain, yields significantly improved channel estimates over unstructured approaches (more than 10dB gain in SNR).

[1]  Fredrik Tufvesson,et al.  Path Loss Modeling for Vehicle-to-Vehicle Communications , 2011, IEEE Transactions on Vehicular Technology.

[2]  Urbashi Mitra,et al.  UWB Sparse/Diffuse Channels, Part I: Channel Models and Bayesian Estimators , 2012, IEEE Transactions on Signal Processing.

[3]  Fredrik Tufvesson,et al.  A survey on vehicle-to-vehicle propagation channels , 2009, IEEE Wireless Communications.

[4]  Philip Schniter,et al.  A Message-Passing Receiver for BICM-OFDM Over Unknown Clustered-Sparse Channels , 2011, IEEE Journal of Selected Topics in Signal Processing.

[5]  F MolischAndreas,et al.  A geometry-based stochastic MIMO model for vehicle-to-vehicle communications , 2009 .

[6]  Urbashi Mitra,et al.  UWB Sparse/Diffuse Channels, Part II: Estimator Analysis and Practical Channels , 2012, IEEE Transactions on Signal Processing.

[7]  Fredrik Tufvesson,et al.  A geometry-based stochastic MIMO model for vehicle-to-vehicle communications , 2009, IEEE Transactions on Wireless Communications.

[8]  Andreas F. Molisch,et al.  Wireless Communications , 2005 .

[9]  David W. Matolak V2V Communication Channels: State of Knowledge, New Results, and What's Next , 2013, Nets4Cars/Nets4Trains.

[10]  Urbashi Mitra,et al.  Sparse channel estimation with zero tap detection , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

[11]  Fredrik Tufvesson,et al.  Characterization of Vehicle-to-Vehicle Radio Channels from Measurements at 5.2 GHz , 2009, Wirel. Pers. Commun..

[12]  E. L. Lehmann,et al.  Theory of point estimation , 1950 .