Data Communication System

Data Communication System

In data communication, the objective is to get the data to the right destination at the right time with minimum possible cost and minimum possible errors. The four main communication processors and the extent to which they support the achievement of the objectives are: Communication processors are processors with specific optimizations to support communications-teams. Communication processors exist in a wide variety of forms and can be categorized based don the communication system, such as wired or wireless, and based on the layer in the communication system, such as the physical layer, the medium access control layer, or the network layer. Communication processors can be further categorized based on the application, such as audio, video or data and the end system requiring the communication system such as a laptop, a cell phone or a personal computer

1. Modulation Demodulation (Modem).Signals consist of two components –the information signal and the carrier signal. The transmission of any signal over some communication medium usually involves modulation of a carrier. Prior to their transmission the information signal and the carrier signal are combined and the process of combining these two signals is called Modulation

.2. concentrators generally used, a concentrator is a device that acts as an efficient forwarder of data transmission signals. A remote-access hub sometimes referred to as a concentrator. The termaggregatoris also frequently used with approximately the same meaning. A typical concentrator or remote access hub is a device that handles incoming dial-up calls for an Internet (or another network)point-of-presence and performs other services. A concentrator or hub may be able to handle up to100 dial-up modem calls, support a certain number of ISDN connections, and support eased line and frame relay traffic while also functioning as a router

3. MultiplexersA multiplexer sometimes referred to as a "multiplexor" or simply "mux", is a device that selects between a number of input signals. In its simplest form, a multiplexer will have two signal inputs, one control input, and one output. An everyday example of an analog multiplexer is the source selection control on a home stereo unit.It's a device that enables a single communication channel to carry data transmissions from multiple sources simultaneously . The device divides communication channel so that it can be shared by multiple transmission devices

Private Course


Last Update 08/31/2020
Completion Time 53 minutes
Members 29

Live Class

Start Time 09/02/2020 05:28:39
End Time 09/02/2020 05:54:58