Partial preview of the text
Download Analog communication and more Study notes Electrical and Electronics Engineering in PDF only on Docsity!
Analog Communication With the introductory discussion of basic communication systems in previous sections, we will now turn towards the classification of analog and digital communication. In case of analog communication, the message signal to be transmitted is analog. This analog message can be obtained from sources such as speech, video shooting etc. The analog signal varies smoothly and continuously with time. The message signal is then modulated on some carrier frequency by the modulator. The amplifier then gives this signal to the transmitting antenna. Fig. shows the basic, block diagram of analog communication system. Transmitter i Receiver Analog pos ane message H i fs i H a ———}*] Modulator -=———+ Communication! __i.J Demodulator-—+—- Destination signal H eee aes REA 3 | iat niscdauecceeiraaveuans = Carrier Noise Basic analog communication system Presently all the AM, FM radio transmission and TV transmission is analog communication. The analog communication needs lower bandwidth compared to digital communication as we will see. But the effect of noise interference is more in case of analog communication. 
