The use and importance of radio waves and


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The use and importance of radio waves and

  1. 1. The Use and Importance ofRadio Waves and Signals BeyondRadio Broadcasting By Adam Pickup P1125768X
  2. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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.