What is Wireless Technology?
Wireless Technology provides the ability to communicate between two or numerous entities separated by distance without the usage of any type of cables or wires. This includes communications using RF (radio frequency) and IR (Infrared Waves). Wireless technology has always been preceded by wired technology and is comparably more expensive. But wireless technology has provided numerous advantages such as mobility which allows the user to receive and transmit information while on the go.
Wireless technology has provided innumerable benefits in the field of broadcast communications such as radio, television and direct broadcast satellite. A single wireless transmitter is capable of transmitting signals to numerous receiver and simultaneously receive the same information. Wireless technology finds applications in numerous fields such as garage-door-openers, baby monitors, cellular telephones, walkie-talkie and much more. Other than communication devices, wireless technology is well-used transmission systems such as point-to-point microwave links, wireless internet services and advanced satellite communications.
Wireless technology comprises of transmitting electromagnetic (EM) signals via the medium of air. It allows various users to communicate with each other using the same medium and without any interference. This is possible because of two important phenomena namely decrement of the strength of electromagnetic signals with distance and electromagnetic spectrum. This phenomenon can be readily observed with help of radio, the distance from the transmitter will bring distortion in the clarity of sound. Thus, two entities can transmit at the singular instant of time and given that no obstacles are present in between signal will fall as the square of the distance between transmitter and receiver. This phenomenon is known as free space loss.
Wireless technology primarily works on RF (Radio Frequency) and IR (Infrared Signals). The range of such frequencies ranges from a few cycles per second to trillions of hertz and is called electromagnetic spectrum.
Importance and Uses of Wireless Technologies
Wireless technologies can be implemented in a wide variety of aspects of the daily lives of numerous individuals. Wireless keyboards and mouse for computers, wireless headphones and speakers, wireless smart sensors are available in the market which can perform numerous tasks. In addition to point-to-point broadcast radio and microwave links, wireless devices and appliance are becoming increasingly common. Wireless technology can be readily employed in places where it is complex and non-feasible to run cables. Most commonly used wireless technology includes Bluetooth which acts as a cable replacement wireless technology that possesses the capability to connect to any device that can be networked to any other appliance such as a digital camera to laptop, coffee maker to the Internet. Bluetooth finds its applications in numerous devices such as cordless telephones, laptops, mobile phones and other devices. Bluetooth can be defined as short-range wireless technology that communicates actively amongst internet devices and another computer in synchronization. Bluetooth is sometimes called as BT and acts as a source of Personal Area Network (PAN) which provides a way for devices which are close to each other to wirelessly communicate with each other. Bluetooth can communicate to various devices with a range of 1-100 meters depending on capability and power of a device. The most powerful devices of Bluetooth have the capability to communicate with more than 300 feet. Security measures in Bluetooth devices are minimal hence it is susceptible to wide-range and variety of security threats (Verma, 2015).
Wireless technology can be categories on the basis of voice or data applications or based on mobility of host device – fixed, stationary, portable or mobile. Cellular and cordless telephones are the most common examples of voice applications. Both cordless telephones and cell phones operate at frequencies around 1,000 megahertz (MHz) (Eldeen Adam, 2015). Satellites are also examples of wireless technology which have been used for a long time in order to provide voice communications. An active example of data applications is a pager.
Another important application and usage of Wireless technology are Wi-Fi which is nothing but wireless fidelity. It enables different entities to connect to two and numerous devices wirelessly in order to share data. Wi-Fi can be used over long-distance, mobile connectivity technology for individual business or for a defined geographical constraint.
In Computers, Wi-Fi can be used as an alternative to wired networks that enables individuals to connect to two or more devices for data sharing purposes. Wi-Fi has more range more than Bluetooth. It enables file transfer from server to clients and vice versa without the usage of any sort of wire and minimum usage of network hardware. WLAN card allows wireless networking amongst various devices, wireless routers can facilitate the broadcasting of networking signals in a finite area.
Wireless technology provides innumerable benefits to various users. It helps to connect various devices in order to share data in real time. Wireless devices are equipped with transmitters which are capable of sending and receiving data simultaneously. Bluetooth and Wi-Fi are the most important applications of wireless technology that are highly demanded and used in today’s world. Wireless technology works on two important phenomena Infrared and Electromagnetic spectrum. Numerous wireless products such as wireless keyboard and mouse, wireless speakers and many more are available in the market. These products have the implementation of various aspects of wireless technology. Hence, wireless technology has made life easier by decrementing the usage of a wired connection. Wireless technologies help to simplify numerous complex tasks and decrement overall complexity. Thus, wireless technologies can be readily used for sharing data over a defined network in limited space. Wireless technologies have made numerous tasks of daily lives easier and simpler.
- Eldeen Adam, M. (2015). WIFI SECURITY. International Journal Of Advances in Engineering and Management (IJAEM), [online] 2(2). Available at: http://www.sustech.edu/staff_publications/20150412092456586.pdf [Accessed 15 Jan. 2019].
- Verma, M. (2015). An Overview of Bluetooth Technology and its Communication Applications. International Journal of Current Engineering and Technology, [online] 5(3). Available at: http://inpressco.com/wp-content/uploads/2015/05/Paper191588-1592.pdf [Accessed 15 Jan. 2019].