Wirless Networks

iGuide to Wireless Communications, Third Edition

Chapter 1 Introduction to Wireless Communications By Jorge Olenewa (jolenewa@georgebrown.ca)

Contact Info:

• • • • • • • • E-mail: jolenewa@georgebrown.ca Office: Casa Loma C466B Tel.: 416-415-5000 x6809 Web site: http://faculty.georgebrown.ca/~jolenewa Twitter: @JorgeOlenewa FB: Jorge Olenewa LinkedIn: Jorge Olenewa Google+: Jorge.Olenewa

Guide to Wireless Communications, Third Edition

© Cengage Learning 2014

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Objectives

• Describe how wireless communications technologies are used today • List various applications of wireless communications technology • Outline the advantages and disadvantages of wireless communications technology • List several types of wireless technologies and their purposes

Guide to Wireless Communications, Third Edition

© Cengage Learning 2014

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How Wireless Technology is Used

• Wireless: describes all types of devices and technologies not connected by a wire • Wireless communications: transmission of digital data without the use of wires • Various forms of wireless data communications:

– – – – – – – Bluetooth WirelessHD WiGig Satellite Cellular Wi-Fi-based wireless LANs Fixed broadband wireless communications

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Guide to Wireless Communications, Third Edition

© Cengage Learning 2014

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A Wireless World

• Wireless devices

– Distance: up to 330 feet (100 meters) – Bandwidth: up to 300 Mbps – Can also include Voice over IP (VoIP)

• Wireless network interface card (Wireless NIC)

– Sends and receives data over radio waves

• Smartphone: Combination mobile phone and personal digital assistant (PDA) • Radio frequency identification (RFID) tags: small chips containing radio transponders

Guide to Wireless Communications, Third Edition

© Cengage Learning 2014

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Figure 1-1 Home wireless network (WLAN)

Guide to Wireless Communications, Third Edition

© Cengage Learning 2014

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Bluetooth and Other Short-Range Wireless...