The document discusses the use of radio waves beyond radio broadcasting, providing examples such as mobile computing, wireless communications, and GPS. It explains that wireless communications transfer information over distances without physical connections, and are used in technologies like mobile phones, wireless networking, and garage door openers. The document also discusses how radio waves enable mobile computing by allowing the transfer of data between portable devices like laptops and smartphones, despite limitations in bandwidth, security, power consumption, and transmission interference.

1. The Use and Importance of
Radio Waves and Signals Beyond
Radio Broadcasting
By Adam Pickup
P1125768X

2. Outline of Presentation
• In this presentation I will display my research
investigating the use and importance of radio
waves and signals beyond radio
broadcasting, using specific examples such as
from mobile computing and wireless
communications.

3. Wireless Communications
• Wireless telecommunications is the transfer of
information between two or more points that are
not physically connected. Distances can be
short, such as a few meters for television remote
control, or as far as thousands or even millions
of kilometres for deep-space radio
communications. It incluldes various types of
fixed, mobile, and portable two-way
radios, cellular telephones, personal digital
assistants (PDAs), and wireless networking.

4. Wireless Communications
• Other examples of wireless technology include
GPS units, Garage door openers or garage
doors, wireless computer mice, keyboards and
Headset
(telephone/computer), headphones, radio
receivers, satellite television, broadcast
television and cordless telephones.

5. Wireless Communications
• The term "wireless" came into public use to refer to
a radio receiver or transceiver (a dual purpose
receiver and transmitter device), establishing its
usage in the field of wireless telegraphy early on.
Now the term is used to describe modern wireless
connections, like cellular networks and wireless
broadband Internet. It is also used in a general
sense to refer to any type of operation that is
implemented without the use of wires, such as
"wireless remote control" or "wireless energy
transfer", regardless of the specific technology (e.g.
radio, infrared, ultrasonic) used.

6. Wireless Communications
• As you can see although wireless
communications are important to radio
transmission, they also have many other uses
such as in satellite TV, GPS, garage doors and
mobile phones. The technology takes place in
peoples everyday lives a lot more than they
realise.

7. Mobile Computing
• Wireless network refers to any type of computer
network that is not connected by cables of any
kind. It is a method by which
homes, telecommunications networks and
enterprise (business) installations avoid the
costly process of introducing cables into a
building. Wireless telecommunications networks
are generally implemented and administered
using radio waves.

8. Mobile computing
• Mobile computing: “being able to use a computing
device even when being mobile and therefore
changing location.” Mobile computing has three
aspects: mobile communication, mobile
hardware, and mobile software. The first aspect
addresses communication issues in ad-hoc and
infrastructure networks as well as communication
properties, protocols, data formats and concrete
technologies. The second aspect is on the
hardware, e.g., mobile devices or device
components. The third aspect deals with the
characteristics and requirements of mobile
applications.

9. Mobile Computing
• Radio waves help transfer this data from
portable device to device, however there are
many limitations to mobile computing. These
include insufficient bandwidth, security
standards, power consumption and transmission
interferences.

10. Mobile Computing
• Portable computing devices include
laptops, PDA’s, smartphones and a carputer
which is a computing device installed in an
automobile. Wireless data connections used in
mobile computing take three general forms -
Cellular data, Wi-Fi and satellite internet. Some
enterprise deployments combine networks from
multiple cellular networks or use a mix of all
three.

11. Conclusion
• So in conclusion, you can see how radio waves
go beyond simply transmitting signals for radio
broadcasting. These signals are utilised in
mobile computing through laptops and
PDA’s, as well as in examples of wireless
communications such as GPS units and garage
door openers.