Analog and Digital Communication CS2204 Anna University Nov/Dec 2012 Important Questions

Anna University, Chennai Nov/Dec 2012 Examinations Important Questions
Analog and Digital Communication CS2204
Unit I-V
1.     Derive an expression for a single tone FM signal and draw its frequency spectrum
2.     Define amplitude modulation. Drive the relation between the total transmitted power and  carrier power in an AM system when several frequencies simultaneously modulated a carrier
3.     Derive the expression for a Amplitude Modulated wave and draw its spectrum.         
4.     Draw the block diagram of Super Heterodyne receiver and explain the function of each block
5.     Briefly describe the method of deriving wideband FM signal
6.     Compare AM and FM with special reference to spectrum, power requirements, sidebands and bandwidth required
7.      Explain quadrature amplitude modulation with neat diagrams
8.     Discuss the QPSK transmission system with neat diagrams
9.     Describe with neat diagram the concept of QAM modulator. Draw its constellation diagram.
10.What is known as Binary Phase Shift Keying? Discuss in detail the BPSK  transmitter and receiver.
11. Describe with neat diagram the operation of a QPSK modulator. Draw its phasor and constellation diagram
12.Draw the block diagram of PCM transmitter and receiver and explain its operation
13. Draw the block diagram of delta modulation system and explain
14.Explain the principle of sampling and quantization in digital communication
15. What are the types of sampling? Explain the operation of Sample and Hold Circuit
16.Explain the detail about the parallel interface with control signals and timing information
17. Explain the different types of data transmission
18.How are errors detected and corrected in data communication
19.Explain how vertical, longitudinal and cyclic redundancy checking is used for detecting the occurrence of errors in data transmission
20.           Explain error detection and error correction in data communication
21.With a block diagram explain DS spread spectrum with coherent  Binary PSK
22.           Compare TDMA,FDMA CSMA multiple access techniques
23.Explain fast and slow frequency hopping techniques used in spread spectrum
24.           Explain the working of multi pulse excited LPC and code excited LPC