The process of changing the amplitude of the signal wave by impressing or superimposing it on a high-frequency carrier wave, keeping its frequency constant is called amplitude modulation. The block diagram given below represents the flow of the signal from the source to the destination. It is responsible for the generation of information that is to be transmitted. What are the goals of the digital communication system? it sends the data via different frequency signal. The loudspeaker works as the destination in the communication system. An arrangement that extracts the message or information from the transmitted signal at the output end of the channel and reproduces it in a suitable form as the original message signal is a receiver. Broadcast and telephone transmission are common examples of Analog technology. Q. It converts the electrical signal received after processing into its original form (non electrical). As the original message signal cannot be transmitted over a large distance because of their low frequency and amplitude, they are superimposed with high frequency and amplitude wave called carrier wave. The destination also works as a transducer at the receiving end. As the name implies, a Block Diagram is a drawing illustration of a system whose major parts or components are represented by blocks. can a signal be transmitted using an antenna of. 2. communication system. The single-valued function of time that carries the information. Upto what distance. A repeater receives the transmitted signal, amplifies it and send it to the next repeater without distorting the original signal. This all processing is done to just ease the transmission of signal through the channel. This phenomenon of superimposing of message signal with a carrier wave is called modulation. Decrease in signal strength due to energy losses is called? The owner of this blog will not be liable for any inaccuracy or incompleteness of any information on this blog (Website) or found by following any link given on this blog (website). asked Oct 8, 2018 in Physics by Minu ( 46.0k points) communication systems A device which provides output in electrical form or it has input in electrical form is called a? It is also another type of channel problem. The owner of this blog will not be responsible for any losses, injuries, or damages from the display or use of this information. Digital communication system is a system through which we can share different type of data worldwide. An antenna is basically a metallic object, often a collection of wires. This receives the signals from the transmission medium and converts it into a form that is … The loss in initial power is directly proportional to the length of the medium. Transmitter. Photodetector – converts light signals into electrical signals. One may define as " any information signal is known as baseband signal". It is also having one summing point and one take-off … A block diagram is a specialized flowchart used in engineering to visualize a system at a high level. Let us consider the block diagram of a closed loop control system as shown in the following figure to identify these elements. All the processing done on the signal performed in the transmitter makes the transmission process through the channel easier. There are several specifying components in contrary to Figure 1 – the communication channels are the optical fibre cable, and the optical transmitter and optical receiver. In digital technology, the data are generated and processed in two states: High (represented as 1) and Low (represented as 0). In the receiver, the Demodulation (detection) of the modulated signal takes place. 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