1. Lecture 7 – Wireless Technologies

2. Give examples of use of Wireless Systems
Business Information Systems - Wireless Technologies

3. Use of Wireless systems
TV Remote
Automated Gate
Cellphone
Sound System
Laptop
Fan
Headsets
Cellular phone
Business Information Systems - Wireless Technologies

4. Business Information Systems - Wireless Technologies
Why Wireless
Electromagnetic energy
Can pass through a number of objects
Space, Air, Solid Objects
Can work while in motion
Has some resilience to weather elements
Has different ranges
Business Information Systems - Wireless Technologies

5. Business Information Systems - Wireless Technologies

6. Business Information Systems - Wireless Technologies
What does it use
Electromagnetic Spectrum
Following are examples of the waves used
Radio waves (e.g., Automated gate, can penetrate walls, glass and other material
Microwaves (e.g., Cellular phones, can carry more data on it, works well with line of sight)
Infra-red light (e.g., TV remote, need direct line of site)
Laser (e.g., Dental surgery, Destructing opponents in sport)
Business Information Systems - Wireless Technologies

7. Different Kinds of Wireless Technologies
Bluetooth
Range: 10m
Low Cost
Unsecure
State and explain the applications
Business Information Systems - Wireless Technologies

8. Different Kinds of Wireless Technologies
Wi-Fi
Range of 100m
Low cost
State and explain the applications
Business Information Systems - Wireless Technologies

9. What affects a Wifi router
manufacturer
the specific protocol it runs (802.11)
the strength of its device transmitter
the nature of physical obstructions and/or radio interference in the surrounding area
Business Information Systems - Wireless Technologies

10. Different Kinds of Wireless Technologies
WiMAX
Range of 50Km
Costly to deploy
State and explain the applications?
Business Information Systems - Wireless Technologies

11. Different Kinds of Wireless Technologies
GSM (Global System for Mobile Communication) vs CDMA (Code Division Multiple Access)
Comparable
80% - 20% between the two in world adoption
3G vs 4G
LTE (Long Term Evolution)
The future standard and being adopted for 4G by most technologies
Business Information Systems - Wireless Technologies

12. Business Information Systems - Wireless Technologies
How much Bandwidth?
Kbps
2000
384
144
128 64 32
9.6
Business Information Systems - Wireless Technologies

13. WIRELESS ACCESS NETWORK ROADMAP

14. Business Information Systems - Wireless Technologies
Discussion point
Emerging technologies include wearable devices:
What are wearable devices
What is their use
What is their significance
What is their future
Reference reading:
Business Information Systems - Wireless Technologies

15. Business Information Systems - Wireless Technologies
Discussion Point
List some useful mobile apps by industry/profession. What real value are these apps providing.
Business Information Systems - Wireless Technologies

16. Business Information Systems - Wireless Technologies
Reading Assignment
Kindly read the following article
CDMA vs. GSM: What's the Difference? By Sascha Segan, PC Magazine August 22, 2012 (
Business Information Systems - Wireless Technologies