DIGITAL COMMUNICATION SYSTEM
Digital communication is a mode of communication. It occurs when the information or the thought is encoded digitally as discreet signals and then is electronically transferred to the receiver.
Input Transducer (Source): - it is a device which convert analog signal to digital signal. Source also can be digital or analog. e. g. Audio signal, vedio signal Digital binary numbers or Data Base Information
Source Encoder(Data Compressor) : - The signal produced by source is converted into digital signal consists of 1′s and 0′s. Source Encoding or Data Compression The process of efficiently converting the output of analog or digital source into a sequence of binary digits is known as source encoding.
Channel encoder : - it is to introduce some redundancy, in control manner in the binary information sequence which can be transmit to receiver
Digital modulator: - Binary sequence is pass digital modulator which in terms convert the sequence into electrical signal which can be transmit on the channel
Comparison between Analog communication and digital communication
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