A Handbook On Communication Technology[For Railway & Other Engineering (Diploma) Competitive Examinations]

A Handbook On Communication Technology[For Railway & Other Engineering (Diploma) Competitive Examinations]
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A Handbook On Communication Technology[For Railway & Other Engineering (Diploma) Competitive Examinations]

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Publisher: Upkar Prakashan
ISBN: 9789350136027
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Contents 1. Analog Communications ..............................................................................................
3 10
2. Digital Communication ................................................................................................
11 20
3. Electronic Devices and Circuits ..................................................................................... 21 32 4. Analog Electronics ....................................................................................................... 33 46 5. Signals and Systems ..................................................................................................... 47 56 6. Communication Systems ...............................................................................................
59 77
7. Network Theory ........................................................................................................... 78 88 8. Control Systems ...........................................................................................................
89 98
9. Electromagnetic Theory ............................................................................................... 99 106 10. Digital Electronics .........................................................................................................107 117 11. Microprocessors and Computer Organization ................................................................118 131 12. Electrical Materials .......................................................................................................132 140 13. Measurement Instrumentation ................................................................................... 141 149 14. Microwave Engineering ................................................................................................ 150 160
A Handbook on COMMUNICATION TECHNOLOGY
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1. Analog Communications UU Analog Communication is a data transmitting technique in a format that utilizes continuous signals to transmit data including voice, image, video, electrons etc. An analog signal is a variable signal continuous in both time and amplitude which is generally carried by use of modulation. UU Analog circuits do not involve quantisation of information unlike the digital circuits and consequently have a primary disadvantage of random variation and signal degradation, particularly resulting in adding noise to the audio or video quality over a distance. UU Analog transmission is inexpensive and enables information to be transmitted from point-to-point or from one point to many. UU The Block diagram of a communication system is given below Text