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Mohammad Alkhodary 200806080

Ali Al Saihati 200350130

EE 578 Simulation Communication SystemsCase Study (101) Phase II

KFUPM

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Introduction

Overview of the Considered Environment

Generic Channel Model

Channel parametersEnvironment Parameterization and channel

impulse response

References

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OutlinesIntroduction

Overview of the Considered Environment

Generic Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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In UWB we have to control the output power perfectly

in order to avoid the interference with other systems

The channel effects play an important factor in UWB

signal detection, due to power limitation and severmultipath effects.

We have to consider any obstacle or channel effects,

distinguish between narrow and broad environments

and line of Sight and Non Line of Sight propagation.

Its an important to know the profile of the channel

and statistical model of paths arrival time to be used in

Rake receiver.U l t r a W i d e b a n d C h a n n e l M o d e l a n d S i m u l a t i o n 3/22

Outlines

Introduction Overview of the Considered Environment

Generic Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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1) Indoor residential

2) Indoor office

3) Industrial environments: arecharacterized by larger enclosures (factory halls),

filled with a large number of metallic reflectors. This is anticipated to lead to severe

multipath.4) Body-area network (BAN): communication between devices located on the body,

e.g., for medical sensor communications, "wearable" cellphones, etc. Due to the fact

that the main scatterers is in the near field of the antenna, and the generally short

distances, the channel model can be anticipated to be quite different from the other

environments.

5) Outdoor: suburban-like microcell scenario, with a rather small range.6) Agricultural areas/farms: for those areas, few propagation obstacles (silos,

animal pens), with large dististances in between are present. Delay spread can thus

be anticipated to be smaller than in other environments

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OutlinesIntroduction

Overview of the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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Pathloss

Shadowing

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OutlinesIntroduction

Overviewof the Considered Environment

Generic Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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Power Delay CharacteristicsAccording to a very short pulse therefore

multipath components arrive in Poisson

distributed clusters. Furthermore, within

each cluster, the path arrivals are alsodescribed

by a Poisson process. Both cluster interarrival

times and path interarrival times, are thus

exponentially distributed with model

parameters that are experimentallydetermined

U l t r a W i d e b a n d C h a n n e l M o d e l a n d S i m u l a t i o n 6/22

Reflection

Clusters of large

shifted pulses

Scattering

Clusters of

overlapping

pulses

DiffractionClusters ofsmall shifted

pulses

OutlinesIntroduction

Overviewof the Considered Environment

Generic Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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Power Delay Profile

is the number of propagation path. , , is the tap weight of the component in the

cluster, is the delay of the cluster, , is the delay of the MPC relative tothe cluster arrival time . The phases , are uniformly distributed from the range

0,2 .

The number of clusters is assumed to be Poisson-distributed

The distributions of the cluster arrival times are given by a

Poisson processes

is the cluster arrival rate.U l t r a W i d e b a n d C h a n n e l M o d e l a n d S i m u l a t i o n 7/22

OutlinesIntroduction

Overviewof the Considered Environment

Generic Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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valid up to 20 m

OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

h l

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valid for 2-28m

OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

Ch l

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

Ch l t

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

O li Ch l t

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Coveredarea

2-8m

OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

O tli Channel parameters

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

O tli Channel parameters

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

Outlines Channel parameters

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

Outlines Channel parameters

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

Outlines Channel parameters

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OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse

response

References

Outlines Channel parameters

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Andreas F. Molisch, Kannan Balakrishnan, Chia-Chin Chong, IEEE 802.15.4a

channel model - final report.

Alexander M. Haimovich, Jason A. Dabin, THE EFFECTS OF ANTENNA

DIRECTIVITY ON PATH LOSS AND MULTIPATH PROPAGATION IN UWB INDOOR

WIRELESS CHANNELS IEEE signal process journal

Jose L. Paredes, Gonzalo R. Arce, Ultra-Wideband Channel Estimation , IEEE

JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, VOL. 1, NO. 3, OCTOBER

2007

OutlinesIntroduction

Overviewof the Considered EnvironmentGeneric Channel Model

Channel parameters

Parameterization and channel impulse response

References

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