Data Communications and Networking, 4th Edition. by Behrouz A. Forouzan,
McGraw-Hill .... Figure 7.17 Electromagnetic spectrum for wireless
communication.
Chapter 7 Transmission Media Dr. Mznah Al-Rodhaan
Based on
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th
Data and Networking, 4 Edition. byInc. Behrouz A. Forouzan, required McGraw-Hill Companies, Inc., 2007 or display. Dr. Mznah Al-Rodhaan Copyright ©Communications The McGraw-Hill Companies, Permission for reproduction
Figure 7.1 Transmission medium and physical layer
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.2 Classes of transmission media
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
7-1 GUIDED MEDIA Guided G id d media, di which hi h are those h that h provide id a conduit from one device to another, include twistedtwisted i d-pair i cable, bl coaxial i l cable, bl andd fiberfib -optic fiber i cable.. cable
Topics discussed in this section: Twisted-Pair Cable Coaxial Cable Fiber-Optic Cable
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.3 Twisted-pair cable
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.4 UTP and STP cables
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Table 7.1 Categories of unshielded twisted-pair cables
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.5 UTP connector
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.7 Coaxial cable
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Table 7.2 Categories of coaxial cables
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.8 BNC connectors
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Fib O i Cable Fiber-Optic C bl Figure 7.10 Bending of light ray
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.11 Optical fiber
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Propagation Modes
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.14 Fiber construction
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.15 Fiber-optic cable connectors
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Advantages and disadvantages of Fiber-optic
Advantages • Higher bandwidth • Less signal attenuation • Immunity to electromagnetic interference • Resistance to corrosive materials • Light weight • More immunity to tapping Disadvantages Di d t • Installation and maintenance • Cost • Unidirectional
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
7-2 UNGUIDED MEDIA: WIRELESS Unguided media transport electromagnetic waves without using a physical conductor. conductor. This type of communication is often referred to as wireless communication.. communication
Topics discussed in this section: Radio Waves Microwaves Infrared 7.18
Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.17 Electromagnetic spectrum for wireless communication
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.18 Propagation methods
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.19 Wireless transmission waves
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Figure 7.20 Omnidirectional antenna
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Radio waves are used for multicast communications, i ti such h as radio di and d television, and paging systems.
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Microwaves are used for unicast communication such as cellular telephones satellite networks, telephones, networks and wireless LANs.
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
Infrared signals can be used for shortrange communication i ti in i a closed l d area using line-of-sight propagation. Sun’s ray contain infrared waves. Applications: IrDA
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Based on th Data Communications and Networking, 4 Edition. by Behrouz A. Forouzan, McGraw-Hill Companies, Inc., 2007
Dr. Mznah Al-Rodhaan
