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TN 411: Wireless and Mobile

Communication

Department of Telecommunications and Communications Networks

Lecture 1: Overview of Wireless Communications

Course Objectives

• To introduce the student to the most recent techniques in the broad field of Wireless Communications
• To provide an in-depth understanding of the major building blocks of modern digital mobile and wireless communication systems.
• To enable the student to synthesis and analyze wireless and mobile cellular communication systems over a stochastic fading channel.
• To provide the student with an understanding of advanced multiple access techniques
• To give the student an understanding digital cellular systems (GSM, cdmaone, GPRS, EDGE, cdma2000, and W-CDMA)

Course Contents

1) The Basics of Wireless Communications

2) Overview of a Cellular Telephone System

3) Radio Spectrum as a Scarce Resource

4) First, Second, Third and Fourth Generation

(1G, 2G, 3G and 4G) Wireless

Communications

5) GSM Network Elements and Operation

6) Fixed Wireless Architectures and Technologies

Key References/Textbooks

1. Andrea Goldsmith, “Wireless Communications”, Cambridge Univ. Press, 2005

2. Theodore S. Rappaport, “Wireless communications: Principles & Practice”, Prentice Hall, 1996.

3. Vijay K. Garg, “Wireless Communications and Networking”, Elsevier, 2007.

4. William Web, “Understanding Cellular Radio”, Artech House,

5. David Tse, “Fundamentals of Wireless Communication”, Cambridge Univ. Press, 2005.

Wireless vs Mobile Communication

• Briefly distinguish between the following

terms:

• Wireless communication and Mobile communication
• Wireless communication and Wireless network

Overview of Wireless Communications

• Wireless communications is, by any measure, the fastest growing segment of the communications industry and has captured the attention of the media and the imagination of the public.
• Cellular systems have experienced exponential growth over the last decade.
• Cellular phones have become a critical business tool and part of everyday life in most developed countries, and are rapidly supplanting antiquated wireline systems in many developing countries.
• In addition, wireless local area networks currently supplement or replace wired networks.

Trend of Mobile and Fixed Subscription in Tanzania

In 2015,

• 142, 819 – fixed
• 39,665, 600 – Mobile

Source: TCRA, 2016

Trend of Internet Penetration in Tanzania

In 2015,

• 662,882 – Fixed Wireless
• 16,280,943 – Mobile
• 319,698 – Fixed Wired

Source: TCRA, 2016

Mobile network coverage and evolving

technologies

Source: ITU, 2016

• World’s Offline Population,
• Source: ITU,

Internet penetration rate for men and women, 2016

Source: ITU, 2016

Internet penetration rates are higher for men than for women in all regions of the world.

What do you think could be the reason?

Internet penetration rate for men and women, 2016…

• The global Internet user gender gap grew from 11% in 2013 to 12% in 2016.
• The gap remains large in the world’s Least Developed Countries (LDCs) - at 31%.
• In 2016, the regional gender gap is largest in Africa (23%) and smallest in the Americas (2%).
• What should be done to bridge this gap? Discuss

Percentage of individuals using the Internet…

• Close to one out of two people (47%) in the

world are using the Internet BUT only one out of seven people in the LDCs.

• Developed regions are home to one billion

Internet users, compared to 2.5 billion users in the developing world.

Percentage of households with Internet access

Source: ITU, 2016