networks can be categorized by their size as well as their purpose. o PAN: Personal Area Network o LAN: Local Area Network o WAN: Wide Area Network o MAN: Metropolitan Area Network o SAN: Storage Area Network o CAN: Campus Area Network o WLAN: Wireless Local Area Network PAN- Personal Area Network • PAN is a computer network organized around an individual person/home. • PAN typically involves one or more computers, laptops, mobile phones, printers, cameras, video game consoles and other personal
The term “Wireless communication” was introduced in the 19th century and this technology has been developed over the subsequent years. It all began when Marconi succeeded in transmitting radio transmissions over the Atlantic and today every part of the world is within one’s reach. Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor. It is one of the most important mediums of transmission of information from one device
from a power source to a load without any usage of any kind of electrical conductors or wires, the discussion here is about how energy can be transmitted as microwaves and methods of Wireless power transmission (WPT), History of Wireless power transmission (WPT), advantages and disadvantages . Index Terms: Wireless power transmission (WPT), microwaves generator, Rectenna, Solar power satellites (SPS), Electromagnetic induction , . I. Introduction The major challenges in power transmission though
1. Wireless LAN: Wireless LAN (WLAN) stands for wireless local area network also referred as LAWN. LAWN stands for local area wireless network, is one in which user can connect to a local area network through a wireless connection using radio signals. This LAN provides wireless communication over a short distance area using radio or infrared signals. This can be build using any different wireless network protocols, most commonly either Wi-Fi or Bluetooth. The pros and cons of wireless LAN is as following
security issue. Li-Fi is based on data transmission through visible lights. Li-Fi is secure as light rays cannot penetrate through walls. They cannot be misused and traced by other People, who is intentionally trying to misuse it. B. NETWORK CAPACITY: Wireless data which is transmitted through radio waves are mostly limited and expensive. It has to face with the problem of or limited amount of bandwidth. The bandwidth capacity of Light
II. SETTING THE STAGE FOR HIGH-DENSITY DEPLOYMENTS Every wireless networking protocol that we have today is comprise between three basic ideas: 1) Simplicity 2) Efficiency 3) Flexibility Simplicity is important because it makes it easy for engineers to debug the network and fix any issues it might be facing. It also makes it easier to find capable engineers to work on the network. Efficiency in this context refers to things like throughput, data rate that define how well the network is performing. Flexibility
Wireless technology in education system of Pakistan Wireless Education System in Pakistan: Wireless networks are computer networks that does not uses cable/wire but work with wireless data connection between network nodes. Wireless network play an important role in education system of Pakistan. Wireless networking use radio waves instead of wires. For Example: cell phone networks, WLAN, laptop to internet etc are wireless networks. Wireless
group of them to create a grid pattern where a greater range is serviced. Advantages and Disadvantages of Radio Waves The advantages of radio waves are that wireless communication is possible and information is able to be instantaneously transferred. It makes devices such as the cell phone, TV and GPS’s possible. Due to it being wireless communication it often serves as one of the cheaper methods of communication. The construction of cell phone towers is less labour intensive and cheaper to build than
watches, Tablets and other wireless devices.Data communication and networks are driving in the capacity of wireless devices. Wi-Fi is more popular today but now new technology Light fidelity(Li-Fi) is establish in 2011 by German Physist that is 100 time faster than Wi-Fi.InLi-Filight has a medium of communication .Hence ,it bandwidth is in Tera Hertz range as compare to Giga Hertz of Wi-Fi. It is based on optical wireless communication. Optical wirless communication is based on unguided propogationmedium
transmitting these signals is placed in zones requiring silence. 1.2 EXISTING SYSTEM: The existing system of jammers blocks total communication which makes a person completely inaccessible even in case of emergency. The existing system of jammers does not provide any immunity against the nuisance caused by mobile phones due to loud speaker. 1.2.1 DISADVANTAGES: The person can make a call, send SMS, play games and listen songs while driving. The person cannot be contacted for some urgent information