Channel Modelling for Vehicle to Vehicle Communication (1)

8/4/2019 Channel Modelling for Vehicle to Vehicle Communication (1)

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CHANNEL MODELLING FOR

VEHICLE TO VEHICLECOMMUNICATION

PRESENTED BY

NITHIN J PATHALIL

08EC140


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NEED FOR V2V COMMUNICATION

For making vehicle intelligent.

For road safety.

For making commuters aware of road conditions and

weather conditions.

Network sharing of files, music, videos like a wirelessLAN and much more.


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CONCEPT OF INTER VEHICLE

COMMUNICATION

Concept of inter-vehicle communications


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THE CONCEPT

Concept of inter-vehicle communications

achieved by adaptive mobile ad-hoc networks.

Cluster preferably consists of vehicles with the

same intention. Participants within a cluster should able to

communicate with each other.

One of the participants serves as the master

or router.

Substantial reduction of the transmission of

control data is achieved in the system.


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A comprehensive IVC channel

Model Dynamic Road Traffic Modelling.

Modelling Of The Vehicle's Vicinity.

Modelling of the Road Lane.

Modelling of the Road Surrounding.

Wave Propagation Modelling


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DYNAMIC ROAD TRAFFIC

MODELLING

Two snapshots of a traffic simulation


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Dynamic Modelling

Able to generate realistic time series of the

simulation scenario.

Takes into account the individual driving

behaviour. Each single vehicle gets a statistically generated

set of intrinsic parameters.

The vehicle interacts with external influence

factors.


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MODELLING OF THE VEHICLE'S

VICINITY

Includes the moving vehicles, the lane and the

environment adjacent to the lane.

Stochastic modelling of the environment consist

of the subsections-

Modelling of the Road Lane.

Modelling of the Road Surrounding.


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MODELLING OF THE WAVE

PROPAGATION

Ray-optical methods are used for the wave

propagation modelling.

Main problem with ray optics-

determination of the different propagation

paths.

For the initial calculations-

only single and

multiple reflections are taken into account.


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Ray Optic Modelling

Reflection paths up to the fourth order


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PROPERTIES OF V2V CHANNEL

BEING MODELLED

It should have a frequency range around 5.9 GHz

(Bandwidth of 5 to 10 MHz).

Effects of multipath scattering and fading have to

be taken into consideration.

As the wavelength is lower compared to mostcommunications, the problem of Doppler Shift

will have to be considered.


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STAGES INVOLVED IN

MODELLING

Modelling of Non Stationary CIR, i.e. Channel

Impulse Response

This is achieved through Tapped Delay Line

Filter Modelling


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Channel Impulse Response V/s Time


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Non Stationary CIR

The channel is modelled as a time varying linear filter of

impulse response given by

e(a complex function)

z(t) a persistence process used to account for thefinite lifetime of the propagation paths.


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TAPPED DELAY LINE MODEL

FOR A WIRELESS CHANNEL


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CONCLUSION

A new IVC channel model is presentedwhich is based on wave propagation

modelling in realistic traffic scenarios.

Also the mathematical model of thechannel starting from a time varying

linear filter all the way to the tap design

using Maximum likelihood modelling ispresented.


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References

D. W. Matolak, I. Sen, and W. Xiong, ChannelModeling for V2V Communications, (invitedpaper) Proc.2nd Intl. Wksp. Vehicle-to-VehicleCommunications 2006, San Jose, CA, 21 July

2006. Konchady Gautam Shenoy Channel Modelling in

Vehicle to Vehicle Networks.

Jurgen Maurer, Werner Sorgel and Werner

Wiesbeck Ray-tracing For Vehicle-to-vehicleCommunications.


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THANK YOU

Channel Modelling for Vehicle to Vehicle Communication (1)

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