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Infrared Transmission Media - Essay Assignment 2
Purpose of the Infrared Transmission Media To start off, let us establish what infrared transmission is in the context of networking. Infrared transmission is merely an alternative means of wireless communication of electronic devices. The most common method of wireless transmission is radio waves, which is what your wireless router operates on. Infrared transmission is the same concept as your radio wave transmission but operates much differently. We use infrared transmission media every day of our lives without considering the fact that we are. This is because infrared technology is very commonly used in remote controls for garage doors and televisions due to its low cost and lack of licensing
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Reasoning as to why infrared light is used as opposed to visible light is derived from the fact that visible light is much more susceptible to interference. Thus, we end up with the infrared light spectrum, which is the most reliable spectrum of light that can be used for unguided network communication. When multiple devices are setup to use a direct infrared connection, they communicate via their infrared devices emitting pulses of light towards each other. Most every day devices which rely on infrared transmission such as garage door openers and television remotes use these pulses or flashes in specific combinations to signify different commands. Computers, though, cannot use this method under normal circumstances due to the way binary code operates. This is due to the fact that if each pulse is a 1 then the absence of a pulse would be a 0, thus one can see where many problems can arise. To solve this, there is a protocol which infrared transmission operates known as IrDA (Infrared Data Association) which regulates how infrared devices communicate. The methods of connection which were just spoken of are referred to as direct connections, there is another way to connect infrared devices though. This alternative is known as diffuse technology where a special access point diffuses infrared light in such a way as to …show more content…
Not to get too technical, but the first advantage that infrared technology has over its competitors is that the infrared light spectrum has one of the widest bandwidths. This means that it can theoretically be extremely fast with very large amounts of data if set up correctly. That proper setup being either in short distances outside at night or for a LAN network within a number of adjacent rooms. If setup properly, an infrared connection can be extremely reliable if nothing passes through its transmission path. If the area you wish to construct a network in fits within the guidelines, then a extremely poignant advantage is the low cost associated with infrared
Like a lot inventions in the past two centuries, modern fibre optic cable was created for military uses. The manager for Copper Cable and Wire at the US Army Signal Corps was getting more displeased with the amount of signal loss that was due to copper cable.
Properly secure wireless systems: - To prevent data breaches it is very important to secure wireless networks. WI- Fi network security is necessary because it is very easy to hack the data and unauthorized access. Breaches can be prevented by using strong passwords, encryption methods, and strong verification.
Wi-Fi facilitates ease of use and is getting increasingly popular with homes and businesses. Multiple Wi-Fi Access Points can be located in a given area. Wi-Fi security issues continue to be a problem, as the number of Access Points grows.
The concept of fiber optics is simple, yet it provides so many potentialities in the world of technology. Presently the world relies on fiber optical technology for its data and communications systems. The consumer can converse on the telephone and hear voices with clarity, as well as send and receive information on the Internet with ease. However, there still lay a sea of possibilities in this area of technology that has not yet been discovered.
Infrared Data Association (IrDA) founded on 1993. IrDA is utilized for high speed short range, line of sight, point-to-point cordless data transfer via infrared light waves. IrDA is the radio transmission of light ray infrared measured in Terahertz or Trillions of Hertz (cycles per seconds) is modulated with information send from transmitter to receiver in short distance. Does not specify any security measures. Infrared radiation(IR) is used to control a TV set with a remote control. Infrared data communication is most use in wireless data communication due to popularity of laptop computers, personal digital assistant(PDA), digital cameras, mobile telephone, pagers and other devices. IrDA specifications include IrPHY, IrLAP, IrLMP, IrCOMM, Tiny TP, IrOBEX, IrLAN, and IrSimple.
With the emergence of the Ethernet LAN (Local Area Network) introduced in the early 1970s by Xerox, the telecommunications world has welcomed this newfound gift with open arms. Since communications is such a vital aspect of all businesses these days, proper acquaintance with this marvelous technology can greatly enhance your company's productivity and efficiency. In this paper, we will reflect into the many different characteristics of media that the LANs are based upon and compare/contrast these different medias.
Wireless technology has come from the basics of cellular usage to sensors in the medical field. Wires are now a thing of the past in today’s world with technology forever revitalizing. Wi-Fi (Wireless Network) or 802.11 networking is a phenomenal way of providing wireless Internet at a low cost. Using radio waves, a wireless network connects a PC, mobile phone or just about anything that connects to the internet wirelessly via a router.
technologies such as Bluetooth and ZigBee which are used to carry the information from perception devices to a nearby gateway based on the capabilities of the communicating parties. Internet technologies such as WiFi, 2G, 3G, and 4G carry the information over long distances based on the application. Since applications aim to create smart homes, smart cities, power system monitoring etc.
LANs systems can be defined and connected in many different ways. This is the reason for the standardization for every one can have a common ground to start from. “The LANs described Herein are distinguished from other types of data networks in that they are optimized for a moderate size geographic area such as a single office building, warehouse, or a campus. The IEEE 802 LAN is a shared medium peer-to-peer communications network that broadcasts information for all stations to receive. As a consequence, it does not inherently provide privacy. The LAN enables stations to communicate directly using a common physical medium on a point-to-point basis without any intermediate switching node being required. There is always need for an access sublayer in order to arbitrate to access to the shared medium. The network is generally owned, used, and operated by a single organization. This is in contrast to Wide Area Networks (WANs) that interconnect communication facilities in different parts of a country or are used as a public utility. These LANs are also different from networks, such as backplane buses, that are optimized for the interconnection of devices on a desk top or components within a single piece of equipment.”(IEEE 802 Standard 1990) That is the standard definition for LANs by Institute of Electrical and Electronics Engineer committee 802. They are the committee used to set the standard in workmanship and operations for technicians that set-up and perform maintenance on LANs systems. And through all the technical words what they are trying to say is a LAN is a small area network that distributes information among computer in a small work environment unlike WANs that distribute information across global areas.
Barcodes are used everywhere around us. They are used to track products through shipment, track products at a store and speed up and enhance the checkout process, as well as allowing faster access to information. Barcodes began to be used heavily in the 1970’s. This began a great movement in the consumer industry, speeding up the checkout process and allowing easier inventory tracking. However, just like all technologies, barcodes have been enhanced many times over and are being replaced by better, more efficient systems (Bonsor).
The use of light as a communication media used in China Great Wall distance more than 7300 km with in 1 hour to sent signal from one tower to another. In the late 20th century optical communication took back in to the seat for its advantages over coaxial transport and other electrical communication system. In 1966, Kaw and Hockman proposed the idea of using optical fiber light wave communication and their prediction was data loss 20dB/km [12]. In late 1980s to 1990s, coherent detection communication systems were introduced to enhance the transmission system. However, optical system needs still regeneration over long distance. By early 1990s, the system channel capacity boosted and reached to 10Gb/s but in 2003 it reached up to 40Gb/s via support WDM system. Recently, some experiments have done to transmit data 21.7 Tb/s though crossing the 10Tb/s per fiber barrier and it is new challenges for optical communication to innovate novel schemes of optical amplification, modulation technique or Fiber channel design.
In Li-Fi, light can't transmit through walls and hence will provide more secure data transfer.
As you can see for the most part, people are connecting to wireless from the moment they leave their home till they get to work and then back. Wireless communication definitely provides an advantage over wired networks due to its mobility, allowing users to connect from virtually anywhere.
Introduction: This is a 21th century, technology is the most important and improved thing of the human life. It makes life easier and faster. Development of faster sophisticated technology we have better and fast life. So all we are connect each other by computer network. There are two different way of network: Wired and wireless. Now day we can found network almost everywhere. Home, business, public place, Airport, Planes, hospitals, school, train everywhere we can found networking. Therefore, almost every sector of the economy that has affected by wired and wireless technology. Wired network and wireless protect both has security, But in general wireless network is less secure than wired networks. For proper security AP (access point) and its antenna should be right position. Also add a wireless access point or use a wireless router we can connect to network wirelessly. AS we using more and more of devices (smart phones, tablet and computers) rely on wireless networking, we have to improve our network security too.
People in the present society have turned from the use of the old means of communication to the more advanced and technological ways of communicating. Technology has made it easier for people to communicate in a faster, efficient, and cost saving means through the introduction of the communication channels. The world has turned out to be the centre for technology with different technologies emerging daily as the people continue to develop from time to time to cope with the growing technology. The benefits of adopting the communication technology are explained in this article which shows why people do not function without technology.