Noise In Digital Communication

ANALOG AND DIGITAL SIGNAL 1.1 Analog signal An analog or analogue signal is any continuous signal for which the time varying feature (variable) of the signal is a representation of some other time varying quantity, i.e., analog to another time varying signal. For example, in an analog audio signal, the instantaneous voltage of the signal varies continuously with the pressure of the sound waves. It differs from a digital signal, in which a continuous quantity is represented

Telecommunication occurs when the exchange of information between two or more entities (communication) includes the use of technology. Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves.[1][2][3][4][5][6] The word is often used in its plural form, telecommunications, because it involves many different technologies. Early means of communicating over a distance included

Firstly I will explain what is signal ,signal processing ,analogue viruses digital signal types of signal processing their advantages and disadvantages and their comparison .I-e which one is better …….why analog signal processing (ASP) is replaced with digital signal processing (DSP). What is Signal??? Any physical quantity that varies with time or any other independent variable is called signal. What is signal processing??? Signal processing is concerned with the improvement of quality of a signal

Digital Satellite Communication Systems by Nwodo Nenne (Matriculation Number: 130805063) Department of Computer Sciences University of Lagos (Ref: CSC422/2014-15) Abstract Digital satellite communications is conducted in a bandwidth and power limited system of noise contributors, filters, nonlinear amplifiers, and adjacent channel interference. The objective of this paper is to investigate modern digital satellite communication systems. In this paper, the readers mind will be opened to the overall

'Communication -- - the process of transmitting and receiving ideas, information, and messages. The rapid transmission of information over long distances and ready access to information have become conspicuous and important features of human society, especially in the past 150 years.' The encyclopedia definition of communication encompasses the ideas of exchanging a variety of messages with others. This is important to remember when looking at communications within an organization. The whole process

The world is full of noise and excessive noise exposure can cause hearing loss. There is more than 360 million of people are suffering from hearing losses (WHO) and in Canada, around 20% of the population of the total peoples have this problem (Static Canada). The reason for increasing the amount of hearing loss is because of the growing number of older people and the uncontrolled sounds. However, the static Canada shows us that, nearly 42 % peoples are at a risk of noise-induced hearing loss (NIHL)

conducted on multiplicative noise removal using homomorphic filter, the development of efficient de-noising methods is still one of the most important tasks. Noise effects badly on the signal. In many times signals are consolidated in a complicated way. Sending visual digital images is one of the main problems that we face in modern data communication network. Sometimes the image may not be received from the source by the receiver and it may get interrupted with noise. To get high quality image we

Fire Fighting Technology Innovations in Communication Technology This 80,000 pound powerhouse was just purchased by the Swarthmore Fire & Protective Association. Equipped with a 100-foot aerial and a 2000 gallon per minute (gpm) Hale single stage pump, Tower 14 can knock down just about any fire. "The first five minutes after the first fire apparatus arrives on scene at a large-scale fire are coordinated chaos." Joe Lombardo of the Garden City Fire Department made it a point during

Digital radiography (DR) is a revolutionary invention in radiography. With this technology, no cassette is needed for an x-ray examination meaning that there is no need to reload films or to erase imaging plate in every examination. This is a distinctive feature which conventional radiography and computed radiography (CR) do not have. DR was first introduced in 1996 (Carroll, 2011). Miniature electronic x-ray detectors are used as the image receptor. The detectors enable the direct capture of the

2. Simplex: one way transmission, such as a radio Half-duplex: two way transmission but only one device can transmit at a time Full duplex: two way transmission where both devices can transmit at a time. 3. Coaxial: A single copper wire surrounded by insultation. More expensive than copper twisted pair Copper twisted pair: Either 2 pairs or 4 pairs of copper wires are twisted and surrounded by insulation. Ethernet. Fiber: A fiber cable is either multiple strands of fiber optic surrounded by insulation