cognitivcognitive radio network architecture and its applications.ppte radio network architecture...
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8/9/2019 CognitivCognitive Radio Network Architecture and its Applications.ppte Radio Network Architecture and Its Applications
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Cognitive Radio Network Architectureand its Applications
Vijay A GoudDept of ECE
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.icrowave and Radar Engineering ,s/ania 0niversity
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8/9/2019 CognitivCognitive Radio Network Architecture and its Applications.ppte Radio Network Architecture and Its Applications
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• 'ntroduction to cognitive radio
• unda/entals of cognitive radio technology
• Architecture of cognitive radio network
•
Concept of spectru/ sensing• 'ssues in dyna/ic spectru/ allocation and
sharing
• Applications of cognitive radio
•
Conclusion• References
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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'ntroduction to cognitiveradio
• 2carcity of co//unication resources
• 'ncreased nu/3er of wireless users
• 'ne4cient usage of licensed spectru/
• 'ncreased tra4c in license free 3and
• deploy/ent of dyna/ic spectru/ access techni5ues• 'nnovative co//unication technology to address the a3ove
issues
• -he concept of cognitive radio is proposed
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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unda/entals of cognitive radio technology
Cognitive radio characteristicsa6 Cognitive capa3ility
3 6 Recon7gura3ilty
Cognitive radio functions
a6 2pectru/ sensing and analysis
36 2pectru/ /anage/ent and hando8
c6 2pectru/ allocation and sharing
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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unda/entals of cognitive radio technology
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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unda/entals of cognitive radio technology
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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Architecture of cognitive radio network
Co/ponents of architecture
16pri/ary network
+6pri/ary 3ase station
%6secondary network
#6secondary 3ase station
!6spectru/ 3roker
16 V'(A)*(AN +1!*C,GN'-'VERAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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Architecture of cognitive radio network
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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2pectru/ sensing andanalysis
• Energy detector
16/ost co//on type of spectru/ sensing
+6easy to i/ple/ent
%6re5uires no prior knowledge of pri/ary signal
• eature detector16inherent periodicity in signals co/pared to noise
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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2pectru/ sensing and analysis
• .atched 7ltering and coherent detection
16prior infor/ation a3out pri/ary signal is re5uired
• Cooperative sensing
16user selection+6decision fusion
%6e4cient infor/ation sharing
#6disri3uted cooperative sensing
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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Dyna/ic spectru/ allocation and
sharing
• ,pen spectru/ sharing
• 9ierarchical access /odel
16specrtu/ underlay
secondary and pri/ary 3oth e:ists
+6spectru/ overlay
secondary e:ists only when pri/ary a3sent
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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'ssues in D2A and sharing
A6 .ediu/ access control in CR networks
;6 2pectru/ hando8
C6 Cognitive relaying
D6 2pectru/ sensing and access
E6
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'ssues Continued=
6 Control channel /anage/ent
G 6 Distri3uted spectru/ sharing
9 6 2pectru/ sharing ga/e
' 6 Routing in a CR network
( 6 Cooperation sti/ulation and enforce/ent> 6 2ecurity in CR networks
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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Applications of cognitive radio
• '/proving the capacity of /ilitary co//unications
• Enhancing pu3lic safety and ho/eland security
• acilitates interopera3ility 3etween variousco//unications syste/s
•
Co//ercial applications like data processing• 2ecure co//unication
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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C,NC?02',N
Cognitive Radio -echnology is the solution towards /oree4cient utili@ation of the scarce spectru/ resources in anadaptive and intelligent way
V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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References
1B acilitating opportunities for e:i3le e4cient and relia3lespectru/
use e/ploying cognitive radio technologiesF Notice of proposed rule
/aking and order CC Dec6 +% CC Doc6 E- Docket No6 %"1H6
+B (6 .itola Cognitive radioF An integrated agent architecture for
softwarede7ned radio -9 Royal 'nst6 of -echnol6
2tockhol/ 2weden +6
%B 2pectru/
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V'(A)*(AN +1!*C,GN'-'VE RAD',
.icrowave and Radar Engineering ,s/ania 0niversity
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