Lecture 1-2 Introduction to Wiress Communications.pptx

7/25/2019 Lecture 1-2 Introduction to Wiress Communications.pptx

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Wireless & Mobile Communication

Wireless Comm - Dr.

Instructor: Dr. Muhammad Arif

[email protected]

[email protected]

Lecture 1

1
mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]


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About Myself

hD !"ni#ersity of $n%ineerin% and echnolo%y'"$ (ahore) * +,,-

urbo Codes

M !"ni#ersity of $n%ineerin% andechnolo%y' "$ (ahore) * +,,1

/$ !MC * 0") * 12

3esearch Interests: $rror Control Codes' MIM4 Wireless ystems'

M"5MIM4' Massi#e MIM4' . .

Wireless Comm - Dr.+


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$6pectations 7

Importance of bein% Wireless Channel

/asic concepts leadin% to Wirelesscomm

Dra8backs and Ad#anta%es

echni9ues & ystems

erformance of systems Di#ersity

Ad#anced opics

Wireless Comm - Dr.


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rere9uisites 7

i%nals and ystems

Communication systems

(inear Al%ebra

Wireless Comm - Dr.;


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eachin% Method 7

lides !Will be uploaded on ClassWebpa%e)

White /oard

Assi%nments

$#aluation:


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$6pectations from you 7

You pay to Learn

/e punctual

/reak imin%s

Class participation Do assi%nments yourself

Do not miss 9ui==es

Collaborati#e study Constructi#e feedback

Wireless Comm - Dr.2


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/ooks 7

Wireless Communications: Principlesand Practice y Theodore Rappaport

Wireless Comm - Dr.

e6t /ook


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/ooks 7

!undamentals of Wireless CommunicationDa"id #se and Pramod $is%anath

Camrid&e 'ni"ersity Press( )**+

Wireless Comm - Dr.

3eference/ook

-


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Maor Course Contents 7

Basic Wireless Channel: Path Loss, Shadowing,

Multipath Fading, Channel Models, channel capacity,perforance in fading channels

Cellular concepts, fre!uency reuse

"i#ersity $ Tie, Fre!uency, space%

Spread spectru and Multicarrier Modulation M,L/ C,MM'1CA#,1 2Y2#/M2 BM5architecture5(ocation trackin% and call setup

Mobility mana%ement5 ando#er5 ecurity5BM MInternational roamin% for BM call recordin% functions

ubscriber and ser#ice data mana%ement Mobile 0umberportability EoI ser#ice for Mobile 0et8orks B3 Architecture

B3 procedures

Wireless Comm - Dr.


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Wireless 7 Mobile 7

Wireless communication is the transferof information bet8een t8o or more pointsthat are not connected by an electricalconductor.

Moile Communication is acommunication 8ith the help of a de#ice

that can make and recei#e telephone callso#er a radio link 8hile mo#in% around a8ide %eo%raphic area.

Wireless Comm - Dr.1,


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Wireless istoryAncient Systems: Carrier Pigeons, smoke signals etc


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Wireless istory . . .


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14/491;


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The Beginning of Commercial Radio:

"This is KDKA, of the Westinghouse Electric and ManufacturingCompan, in East !ittsurgh, !ennsl#ania$ We shall no%roadcast the election returns$"FLeo Rosen&urg, on the #ery 'rst radio &roadcast &y ("(), *o#e&er+, -+.


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Wireless istory . . .E '(R)T CAR TE*E!&+E), -./0123


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Modern Developments (I)


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Modern Developments (II)


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Modern Developments (III)


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>uture Wireless 0et8orks&i!uitous Counication )ong People and "e#i

0e6t5%enerationCellularWireless Internet

AccessWireless Multimediaensor 0et8orksmartomesGpaces

Automatedi h8a s

'sin& any de"ice( in any location( and

in any format


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Challen%es

0et8ork Challen%es carce spectrum Demandin%Gdi#erse applications

3eliability

"bi9uitous co#era%e

eamless indoorGoutdoor operation

De#ice Challen%es i=e' o8er' Cost

Multiple Antennas in ilicon

Multi5radio Inte%ration Co5e6istance

Cellular

Appsrocessor

/

Mediarocessor

B

W(A0

Wima6

DE/5

>MGM


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Current Wireless ystems

Cellular ystems Wireless (A0s

Con#er%ence of Cellular andWi>i

WiBi% and Wireless D

atellite ystems Ji%bee radios

C ll l h


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Cellular hones

h etter performance and reliaility than tod

s rates, lo% latenc, ..5 co#erage indoors a

BSBS

PhoneSystem

BS

San Francisco

ParisNth-Gen

Cellular

Nth-Gen

Cellular

nternet

L#/ ac3one is the nternet

rthing %ireless in one de#ice

n for this performance is on the ac6one ne

C ll l


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Cellular ystems:3euse channels to ma6imi=e capacity Beo%raphic re%ion di#ided into cells

>re9uencyGtimeslotsGcodes reused at spatially5separated locations. Co5channel interference bet8een same color cells !reuse 1 commonno8).

/ase stations coordinate handoK and control functions hrinkin% cell si=e increases capacity' as 8ell as net8orkin% burden

BASE

STATION


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;BG($ Cellular

Much hi%her data rates than B !?,51,, Mbps) B systems has -; Lbps peak rates

Breater spectral eciency !bitsGsG=)

hrou%h MIM4' adapti#e techni9ues >le6ible use of up to 1,, M= of spectrum +, M= spectrum allocation common

(o8 packet latency

3educed cost5per5bit upport for multimedia

All I net8ork

C f l h i h


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Careful %hat you %ishfor4

Expon

ential

Mobile

Data

Growth

Leadingtomassivespectrumdeficit

5ro%th in moile data( massi"e spectrum de6cit andsta&nant re"enues re7uire technicaland political

rea3throu&hs for on&oin& success of cellular


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3ethinkin% NCellsO in Cellular

raditional cellular desi%n Ninterference5limitedO MIM4Gmultiuser detection can remo#e interference

Cooperatin% /s form a MIM4 array: 8hat is a cell7 3elays chan%e cell shape and boundaries

Distributed antennas mo#e / to8ards cell boundary

>emtocells create a cell 8ithin a cell Mobile cooperation #ia relays' #irtual MIM4' net8ork codin%.

0ow should cellular

systes &e designed1Will gains in practice &&ig or increental2 incapacity or co#erage1

!emto

3elay

DA

CoopMIM4

#h ! t C ll l 1 t 3


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#he !uture Cellular 1et%or3:8ierarchical Architecture

9* Lo%erC,2#;Mps

9*CAPAC#Ympro"em

ent

1ear 9**DM in +, M= 8ith adapti#e rateGcodes peeds of ?; Mbps' appro6. 1,,5+,, ft ran%e

-,+.11n

tandard in +.; B= and ? B= band Adapti#e 4>DM GMIM4 in +,G;, M= !+5; antennas) peeds up to 2,,Mbps' appro6. +,, ft ran%e 4ther ad#ances in packeti=ation' antenna use' etc.

ManyWLA1

cardsha"eall @

a;;&B

WhatRs ne6t7 *).99ac;ad


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Con"er&ence of Cellular and Wi!i

($.11

-eamless handoK bet8een net8orks

- (oad5balancin% of air interface and backbone- Carrier5%rade performance on both net8orks


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2oft%are-De6ned 1et%or3$irtualiation

Network virtualization combines hardware and

software network resources and functionality into a

single, software-based virtual network

Wireless Network Virtualization Layer


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WiBi% and Wireless D

0e8 standards operatin% in 2, B=band

Data rates of 5+? Bbps

/and8idth of around 1, B=!unre%ulated)

3an%e of around 1,m !can be

e6tended) "sesGe6tends -,+.11 MAC (ayer

Applications include C peripherals

and displays for DEs' monitors &


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atellite ystems

Co"er "ery lar&e areas

DiEerent orit hei&hts 5/,s @F*** GmB "ersus L/,s

)*** GmB 5loal Positionin& 2ystem 5P2B

use &ro%in&

2atellite si&nals used to pinpoint

location

Popular in cell phones( PDAs(

and na"i&ation de"ices


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I$$$ -,+.1?.;GJi%/ee 3adios

(o853ate WA0 Data rates of +,' ;,' +?, Lbps

upport for lar%e mesh net8orkin% or star

clusters

upport for lo8 latency de#ices

CMA5CA channel access

Eery lo8 po8er consumption

>re9uency of operation in IM bandsFocus is priarily on low power sensor networ4s


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radeoKs

Ji%/ee

/luetooth

-,+.11b

-,+.11%Ga

B

"W/

3an%e

3ate

o8er

-,+.11n


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carce Wireless pectrum

$6pensi#e

$$$


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pectrum 3e%ulation

pectrum a scarce public resource' henceallocated

pectral allocation in " controlled by >CC

!commercial) or 4M !defense) >CC auctions spectral blocks for set

applications.

ome spectrum set aside for uni#ersal use World8ide spectrum controlled by I"53

3e%ulation is a necessary e#il.Inno#ations in re%ulation bein% considered8orld8ide

in multiple co%niti#e radio paradi%ms


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pectral 3euse

Due to its scarcity' spectrum isreused

BS

In licensed

bands

Cellular' Wima6 WiP' /' "W/'H

and unlicensed

bands

3euse introduces interference


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Co%niti#e 3adios

Co%niti#e radios can support ne8 8ireless users ine6istin% cro8ded spectrum Without de%radin% performance of e6istin% users

"tili=e ad#anced communication and si%nal processin%techni9ues Coupled 8ith no#el spectrum allocation policies

echnolo%y could

3e#olutioni=e the 8ay spectrum is allocated 8orld8ide ro#ide sucient band8idth to support hi%her 9uality and

hi%her data rate products and ser#ices


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$mer%in% ystems

Co%niti#e radio net8orks

Ad hocGmesh 8ireless net8orks

ensor net8orks Distributed control net8orks

he smart %rid

/iomedical net8orks


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Ad5ocGMesh 0et8orks

4utdoor Mesh

Indoor Mesh

Wireless 2ensor 1et%or3s


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Wireless 2ensor 1et%or3s"ata Collection and "istri&uted Control

/ner&y transmit and processin&B is the dri"in&constraint

Data Ho%s to centralied location IointcompressionB

Lo% per-node rates ut tens to thousands of nodes

ntelli&ence is in the net%or3 rather than in thede"ices

2mart homes;uild 2mart structures 2earch and rescue 8omeland security /"ent detection attle6eld sur"eill


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he mart Brid:>usion of ensin%' Control' Communications

li i i l h i di i d i


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Applications in ealth'/iomedicine and 0euroscience

3eco#ery from0er#e Dama%e

Doctor5on5a5chip

Wireless0et8ork

0euroG/ioscience-$LB si%nalreceptionGmodelin%-/rain informationtheory-0er#e net8ork

!re)conP%uration-Implants tomonitorG%eneratesi%nals-In5brain sensornet8orks

/ody5Area0et8orks


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Conclusions he 8ireless #ision encompasses many e6citin%

systems and applications

echnical challen%es transcend across all layers of thesystem desi%n.

Cross5layer desi%n emer%in% as a key theme in 8ireless.

$6istin% and emer%in% systems pro#ide e6cellent

9uality for certain applications but poor interoperability.

tandards and spectral allocation hea#ily impact the

e#olution of 8ireless technolo%y

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Lecture 1-2 Introduction to Wiress Communications.pptx

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