Final wireless communicationPresentation Transcript
Wireless Communication Stela Tonita Jingyue Yu Diandian wang Hui Tian
Introduction & Brief history of wireless communication
Wireless communication is transfer of information over a distance without the use of electrical conductors or wires. The distances involved may be short (a few meters as in television remote control) or long (thousands or millions of kilometers for radio communications).
Wireless communication is able to remotely connect to external communications systems such as satellites, cellular phones, and computers throughout the world.
In 1895, Guglielmo Marconi opened the way for
modern wireless communications
From this beginning, wireless communications
has developed into a key element of modern society
In the early 1900s, voice and then music was
transmitted and modern radio was born
including maritime and aeronautical mobile for communications.
either point to point or point to multipoint services
used for broadcasting, telecommunications and internet, particularly over long distance
including military, radio astronomy, meteorological and scientific uses
What is wireless network?
Wireless network is a network set up by using radio signal frequency to communicate among computers and other network devices.
Wireless network allow computing devices to share information and resources via wireless communications
Sometimes it’s also referred to as WiFi Network or WLAN
Easy to set up and no cable involved
Wireless network devices Cable modem : is a device that enables you to hook up your PC to a local cable TV line and receive data at about 1.5 Mbps. Wirelss router : is a device that performs the functions of a router but also includes the functions of a wireless access point and a network switch. PCI wireless adapter : allows a computing device to join a wireless LAN. Wireless network adapters contain a built-in radio transmitter and receiver Wireless adapter card : external adapters that allow computers, both laptops and desktops, to connect to wireless (also known as WiFi) networks.
Use of wireless network
Individual and business to send and share data
Emergency service such as police department.
Advantages : Disadvantages :
Faster Healthy issue
Lower costing (Magnetic radiation)
Backup communication link
Types of connections:
Wireless LAN (Local Area Network)
Wireless PAN (Personal Area Network)
Wireless MAN (Metropolitan Area Network)
Wireless WAN (Wide Area Network)
It is one of the eariest ues of wirelwss communications