Digital and Analog Communication Systems


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View all copies of this ISBN edition:. Synopsis About this title Lathi's trademark user-friendly and highly readable text presents a complete and modern treatment of communication systems. About the Author : B. Lathi is at California State University. Review : "A textbook that focuses on giving students an intuitive understanding of communication systems as well as the theoretical knowledge. Wiberg, University of California, Santa Cruz "About this title" may belong to another edition of this title. Buy New Learn more about this copy.

Modern digital and analog communications systems - CERN Document Server

Other Popular Editions of the Same Title. The analog signal containing information is first provided to the input transducer where the analog message signal is first converted into an equivalent electrical signal. This signal is then provided to the modulator circuit where modulation of the applied signal is performed in order to have long distance and proper signal transmission.

The modulated signal is then transmitted through the communication channel where noise components also get added in it. On reaching the receiver end, the transmitted signal undergoes demodulation by which originally transmitted signal is recovered from the modulated one. This signal is then fed to the output transducer where the actually transmitted analog signal is received. A way of communication in which the message is transmitted in the form of digital pulses or non-continuous form is known as digital communication.

Here, the information is sent in digital format.

Key Differences Between Analog and Digital Communication

Here, the above figure clearly represents a digital communication system comprising of information source along with source encoder and a modulator. At the other end of the communication channel, a source decoder and demodulator is present. A discrete information source generates a message signal that does not show continuous variation with time. This signal is provided to the source encoder. This unit provides a digitized message signal i. The binary sequence is then fed to the modulator, where the modulation of the digital signal takes place. This modulated digital signal is then sent via communication channel.

During communication, the signal undergoes some distortion due to interference caused by additional noise components. At the receiver, the digital signal is first demodulated in order to get the originally transmitted digital signal. This digitized signal is then fed to the source decoder which converts the digital signal into user understandable format. It finds applications majorly in television broadcasting and radio broadcasting. Also, at the time of telephonic conversion, analog communication is taken into consideration.

It is used in computers and satellite communication system. As digital communication supports data encryption thus is widely used for military purpose and long-distance communication. So, from the above discussion, we can conclude that an analog signal is nothing but a composition of continuous values. However, a digital signal is a composition of discrete pulses.

Analog And Digital Communication Books

Both find applications in different fields according to the properties exhibited by them. Your email address will not be published. Skip to content. Key Difference between Analog and Digital Communication During analog communication, a signal that varies constantly with time is transmitted. While in digital communication a signal in the form of pulses carries information and is transmitted.

Digital and Analog Communication Systems Digital and Analog Communication Systems
Digital and Analog Communication Systems Digital and Analog Communication Systems
Digital and Analog Communication Systems Digital and Analog Communication Systems
Digital and Analog Communication Systems Digital and Analog Communication Systems
Digital and Analog Communication Systems Digital and Analog Communication Systems
Digital and Analog Communication Systems Digital and Analog Communication Systems
Digital and Analog Communication Systems Digital and Analog Communication Systems
Digital and Analog Communication Systems Digital and Analog Communication Systems
Digital and Analog Communication Systems

Related Digital and Analog Communication Systems



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