What is "Wireless Communication?" you might ask. Wireless communication is transferring information through a distance without the use of wires or electrical conductors. The term wire-less says it all. The transfer of information might be of a short distance like the usage of a TV remote or a long distance like the use of radio communication to transfer information.
There are so many examples for wireless devices. Some of them are. mobile phones, two way radios, personal digital assistance (also known as a PDA), wireless networks, the GPS unit in cars, computer keyboards, satellite television and so many other electrical equipment that work without the two sources connected by electrical cord.
Wireless communication is used when the use of electrical cord is almost impossible. This technology has permitted us to expand our horizons in communication beyond what we thought would be possible. The term "wireless" is commonly used word in the communication industry. Wireless communication uses energy sources to transfer information. As an example radio frequency, infra red light, laser light, acoustic energy are some of the sources of energy used in wireless communication.
The term wireless is not the same thing as cordless. Cordless is where powered electrical devices are able to operate from a portable power source. The ranges of these devices are limited because the cordless device can only be taken with in the range of the unit which is connected to the power supply. Some cordless phones are sometimes referred to as wireless in the sense because the power unit transfers information to the cordless phone without the use of any electrical cord. This has caused some controversy in the use of the word cordless. But in general the two words remain separate but cordless can be incorporated with the word wireless.
Wireless technology is now been used in a wide range of fields. Wireless technology is used for security purposes. The technology is used in ear pieces and in long range guidance systems. Wireless technology is also used for house hold work. Take for an example the TV remote, which uses infra red technology to transfer information from the remote to the TV. It is also used in cellular phones and modems. These devices use radio waves to establish connections to make long range phone calls. They can be used any where there is telephone reception provided by the service provider. These devices transfer both voice and date through radio waves. Wi-Fi is used as wireless technology between personal computers and similar devices. It's also used for high speed internet connections.
Wireless communication has helped us reach new levels of communication heights. It would be impossible to communicate using satellites if this technology was not available. The technology has reached such heights that now it is possible for us to communicate with astronauts in space. We can communicate with submarines which are hundreds of meters below sea level. We can contact some one who is around the world within a couple of second. Wireless has truly become the window in future communication.