Vehicular Channel Characterization and Its Implications for Wireless System Design and Performance

Mecklenbräuker, Christoph F.; Molisch, Andreas F.; Karedal, J.; Tufvesson, Fredrik; Paier, Alexander; Bernadó, Laura; Zemen, Thomas; Klemp, Oliver; Czink, Nicolai

doi:10.1109/jproc.2010.2101990

Cited by 399 publications

(268 citation statements)

References 73 publications

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“…According to the results of recent channel measurement campaigns [1], the observed Doppler and delay spreads are, however, not sufficiently small but large, with the result that the wireless channel for safety-related inter-vehicle communications is best described through a wideband stochastic channel model, e.g. using the Tapped-Delay Line (TDL) approach.…”

Section: Related Workmentioning

confidence: 99%

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Is CSMA able to coordinate multiple access in vehicular radio channels effectively?

Mittag

Hartenstein

2012

2012 12th International Conference on ITS Telecommunications

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Abstract-The first generation of inter-vehicle communication networks will most likely be based on the IEEE 802.11p standard. That is, they are going to deploy Carrier Sense Multiple Access (CSMA) to coordinate channel access among neighboring vehicles. Recently, concerns have been raised that fast-fading propagation conditions, i.e. a time-and frequency-selective fading as reported by several measurement campaigns in highway environments, might challenge the effectiveness of CSMA. These concerns also lead to the situation that alternative medium access control solutions are being discussed in standardization bodies. In this paper, we evaluate whether these concerns are justified or not. In comparison to previous studies, we use a high fidelity network simulator to study the extent by which the effectiveness of CSMA is reduced if such fading propagation conditions are considered. We also resolve the two reasons that may cause incoordination -either simultaneous transmission times or hidden terminal situations -and conclude that CSMA is able to effectively coordinate multiple access in vehicular radio channels as long as the load offered to the channel does not approach the maximum capacity.

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Section: Related Workmentioning

confidence: 99%

“…[1] for an extensive survey. According to the authors of these papers, the wireless vehicular channel at 5.9 GHz is time-and frequency-selective -in contrast to the stationary wireless indoor channel -which means that the impulse response of the channel is varying significantly with respect to frequency and over time.…”

Section: Introductionmentioning

confidence: 99%

Is CSMA able to coordinate multiple access in vehicular radio channels effectively?

Mittag

Hartenstein

2012

2012 12th International Conference on ITS Telecommunications

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“…It should be clear that there is a bright future for research in mmWave communication for vehicular applications. Vehicular communications in the DSRC context at lower frequencies have been extensively studied [19,54,57,74,86,124], but there are few surveys on mmWave vehicular communications [58,75,143]. The survey in [57] provides a comprehensive overview of vehicular networks including potential applications, existing architecture and standards, as well as PHY and MAC solutions.…”

Section: Introductionmentioning

confidence: 99%

“…More rigorous treatments on the PHY and MAC design can be found in [19,54,124]. Insights on the vehicular propagation channels at lower frequencies can be found in [74,86]. Work on mmWave, however, is limited.…”

Section: Introductionmentioning

confidence: 99%

Millimeter Wave Vehicular Communications: A Survey

Shimizu²,

Bansal³

et al. 2016

FNT in Networking

190

120

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“…The imminent launch of 5G applications along with the standardization of intelligent transport system (ITS) communication under IEEE802.11p/WAVE [1], [2] have given rise to a great number of research work aiming at various aspects of understanding, characterization and modelling of the communication channels in vehicle-to-vehicle (V2V) or vehicleto-infrastructure (V2I) applications [4]- [6]. At the physical layer, there has been a proposal for a set of channel models to parameterize the fading characteristics of the channel in variousV2V traffic scenarios [3].…”

Section: Introductionmentioning

confidence: 99%

Real-time vehicular channel emulator for future conformance tests of wireless ITS modems

Ghiaasi

Ashury

Vlastaras

et al. 2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

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Abstract-In the vehicular communication channels, the mobility of the receiver (RX) and the transmitter (TX) along with the movements of interacting objects in the propagation environment result in significant non-stationary channel fading. The channel impulse response exhibits not just significant delay-and Doppler spreads, but also the delay-and Doppler spreads themselves are changing over the time-and frequency axes. In other words: the channel statistics change as the geometry of RX, TX, and interacting objects evolve over time. To account for this, the local stationary regions in time and frequency are specified and each one is modeled by a distinct local scattering function. We present an architecture for a real-time emulator capable of reproducing the input/output behavior of a non-stationary n-tap wireless vehicular propagation channel. The architecture is implemented as a virtual instrument on LabView and we benchmark the packet error ratio (PER) of a commercial off the shelf (COTS) vehicular IEEE 802.11p modem. The emulator architecture aims at a hardware implementation which features optimised hardware complexity while providing the required flexibility for calculating the non-stationary channel responses by reconfiguring the scattering model for each local stationary region. The National Instrument USRP-Rio 2953R is used as the Software-Defined Radio platform for implementation, however the results and considerations reported are general-purpose and can be applied to other platforms. Finally, we discuss the PER performance of a COTS modem for a vehicular non-stationary channel model derived for highway obstructed line of sight (LOS) scenario in the DRIVEWAY'09 measurement campaign.

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Vehicular Channel Characterization and Its Implications for Wireless System Design and Performance

Cited by 399 publications

References 73 publications

Is CSMA able to coordinate multiple access in vehicular radio channels effectively?

Is CSMA able to coordinate multiple access in vehicular radio channels effectively?

Millimeter Wave Vehicular Communications: A Survey

Real-time vehicular channel emulator for future conformance tests of wireless ITS modems

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