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The Importance Of Communication In Communication And Communication

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CHAPTER 1 INTRODUCTION
1.1 IMPORTANCE OF TRANSMISSION IN COMMUNICATION
In telecommunications, transmission is the important process which is the backbone of communication systems which has recreated the world. Transmission of signals is a method of sending and propagating analog or digital information over a physical point- to- point receivers through a medium which is wired or wireless. The digital revolution has resulted in many digital telecommunication applications where the principles of data transmission are applied in their related field. The main sources of topics, their types and techniques used in transmission are discussed further.
1.2 ELEMENTS OF COMMUNICATION

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This type of transmission uses a continuous signal which varies in amplitude, frequency or phase. Analog transmission is capable of being conveyed in four ways through air, twisted pair cable, coaxial cable or fibre optic cable.
However, there are three basic types of modulation namely amplitude modulation (AM), frequency modulation (FM) or phase modulation (PM). In amplitude modulation the amplitude or signal strength of the carrier wave is being varied in proportion to the waveform being transmitted. In frequency modulation, the frequency of the carrier wave is being varied in proportion to the waveform being transmitted. In phase modulation, the phase of the carrier wave is being varied in proportion to the waveform being transmitted.
The analog transmission has few advantages marked as follows as analog technology records wave forms as they are continuous range of values to represent information. Hence this type of transmission is more accurate. Analog signal processing can be done in real time and consumes less

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