Summary Introduction to Digital Communication

Communication - -is transferring data reliably from one point to another -Data - -AKA information. It can be analog or digital. It could be voice, video or codes. -same - -It is important to receive the _____ information that was sent from the transmitter. -analog data - -The term ________ refers to information that is continuous. It takes on continuous values. -digital data - -The ________ refers to information that has discrete states. It takes on discrete values. -Communication system - -A system that allows transfer of information reliably -analog signal - -is any continuous signal for which the time varying feature (variable) of the signal is a representation of some other time varying quantity. -digital signal - -signal uses discrete (discontinuous) values. By contrast, non-digital (or analog) systems use a continuous range of values to represent information. -electric signals - -Analog and digital signals are used to transmit information, usually through _______. In both these technologies, the information, such as audio or video, is transformed into __________. -varying amplitude - -In analog technology, information is translated into electric pulses of ______. -two distinct amplitudes - -In digital technology, translation of information is in binary format (zero or one) where each bit is representative of _____. -Digital communication - -It is one of the most commonly used modes of communication nowadays. It is a mode of communication where the information is encoded digitally as discrete signals and electronically transferred to the recipients -Digital transmission - -is the transmission of digital pulses between two or more points in a communication system. Ex. LAN -Digital radio - -is the transmission of digital-modulated analog carriers between two or more points in a communication system. Ex. WAN -Channel - -Important in the analysis and design of communication systems are the characteristics of the physical _____ through which the information is transmitted. It generally affects the design of the basic building blocks of the communication system. -Source - -It may output either an analog signal, such as an audio or video signal, or a digital signal, such as the output of a computer, that is discrete in time and has a finite number of output characters. -message - -AKA source output