Tutorial Chapter 1

# Tutorial Chapter 1 - Tutorial 1 Introduction to...

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Tutorial 1: Introduction to Telecommunications BENT 3753: Communication Principles 1 Questions 1. What is the purpose of communication system? 2. Sketch the model of communication system and briefly explain the components of the system 3. Convert the following absolute power ratios to dB: a. 15 b. 3000 c. 0.05 d. 0.008 4. Convert the following decibel values to absolute ratios: 5. State the differences between half-duplex and full-duplex modes 6. Define decibel 7. Convert the following powers to dBm: a. 0.001 μW b. 2 pW c. 16 10 2 . 2 - × W d. 1 mW 8. Converts the following dBm values to watts: 9. What is the function of communication system? 10. What is the difference between a positive and a negative decibel? 11. Given a three-stage system compromised of two amplifiers and a filter with an input power of mW P in 01 . 0 = and absolute power gains of , 250 1 = p A , 3 . 0 2 = p A , 800 3 = p A determine:

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Tutorial 1: Introduction to Telecommunications BENT 3753: Communication Principles 2
• Spring '14
• Decibel, following decibel values

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