The accuracy of this technique is very low due to the fact that cell towers can support ranges of 35 kilometers or more.
A ‘‘Cognitive Radio” is an intelligent radio technology built on software defined radio (SDR) that can change its transmitter parameters by awareness of the environment in which it operates.
The increased demand for radio spectrum has resulted from the evolution of feature-rich and high-data-rate wireless applications. The spectrum is limited, and the current radio spectrum regulations make its use less productive. This has necessitated the development of dynamic spectrum allocation policies to make the utilization of the existing spectrum in a better way. As per the current spectrum allocation regulations, specific bands are assigned to particular services and only licensed users are granted access to licensed bands. Cognitive radio (CR) is expected to modernize the way spectrum is allocated. In a CR network, the cognitive radio part allows the unlicensed users (secondary users) to access spectrum bands allocated to the licensed
One of the biggest attractions of the implementation of this technology is the creation of networks, with the Bluetooth technology for high performance using actuators and sensor.
Continual advancement in technology has led to the extension of wireless accessibility due to Wireless Fidelity (Wi-Fi), an important phenomenon that has been impacting the world over the past decade (Kioskea, 2015). The name Wi- Fi was first coined by Wi-Fi Alliance and it refers to wireless Ethernet 802.11 which defines standards for wireless local area networks (WLANs). But since 802.11 was considered too slow for some applications it was surpassed by extensions 802.11a and 802.11b, and later by 802.11g. Traditionally, this radio technology that uses frequency to transmit data through air was initially originated during late 1980s and was evolved with the fundamental objective of making data communication wireless. But today Wi-Fi has become a necessity for both consumer and enterprise since it does not only represent a means of staying connected at home or at the internet and checking emails and surfing the web, it is also consumed by the users for content purposes such as streaming music and high
A network is a group of computers and other devices (such as printers,phones,or a television) that are connected by some type of transmission media. A network can be two computers connected by a cable in a home office or as large as several thousand computers that are connected across the world. Networks has two fundamentals known as the peer-to-peer and client/server.
Koteswararao makkena was Department of information assurance, Wilmington University. This research was support by information systems technology. Corresponded concerning this article should be addressed by koteswararao makkena, Department of information assurance, Wilmington university, new castle,19720, DE
Wireless technology is very beneficial to human existence, although there is evidence of potential harm to human health. Devices such as cell phones, computers and televisions, have greatly improved and have influenced society. With these advantages, health concerns have arisen and been explored through experiments and surveys. However, these health concerns have not been proven fully, to an extent they are still impacting humans. By examining the general concern and the social, mental and physical impacts of wireless technology, it is evident these devices negatively affect human health.
It uses the mesh topology for transmitting data. This way it offers a secure way for communicating wirelessly with a number of other such devices.
UniFi is an amalgamation of “Uni” which denotes togetherness and camaraderie, while “Fi” symbolieses fibre optics.Unifi is the triple-play servis by Telekom Malaysia. The residential package is a triple play UniFi service which is called VIP because it comes with three services which are V – Video or internet Protocol television, I – High Speed Internet and P – Phone.Unifi is a broadband service that uses fibre optics to deliver high speed internet, phone and IPTV service at home. The type of technology use to deliver UniFi service to customer’s homes would depends on the type of customer premise. If the customer’s premise is a landed property. Fibre to the Home (FTTH) will be used whereas if the customer’s is a high rise building. Very high speed Digital Subscriber Line 2 (VDSL 2) will be use.
Choosing a wireless technology to transmit very small amounts of data from A to B should be very simple in todays world, but in reality making sense of the wireless connectivity technology landscape for the Internet of Things is the opposite of simple and obvious – it is a complex landscape and its getting more complex as time goes by.
Telecommunication is – according to Article 1.3 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as "Any transmission, emission or reception of signs, signals, writings, images and sounds or intelligence of any nature by wire, radio, optical or other electromagnetic systems." This definition is also identical to those contained in the Annex to the Constitution and Convention of the International Telecommunication Union (Geneva, 1992).
There has been tremendous growth in wireless network over the last few decades. Wireless devices such as mobiles, laptops are increasing day by day; hence there is requirement of more frequency bands. The need of allotting different frequencies is due to fact that there should not be any interference. Interference is caused when two applications are using the same frequency band. In wireless network data is propagated in the form of electromagnetic