Tuesday, December 14, 2010


EC 2252                      COMMUNICATION  THEORY                                          3  1  0  4

To study the various analog communication fundamentals viz., Amplitude modulation and demodulation, angle modulation and demodulation. Noise performance of various receivers and information theory with source coding theorem are also dealt.


  • To provide various Amplitude modulation and demodulation systems.
  • To provide various Angle modulation and demodulation systems.
  • To provide some depth analysis in noise performance of various receiver.
  • To study some basic information theory with some channel coding theorem.

1.                  AMPLITUDE MODULATION SYSTEMS                                                            10
Review of Spectral Characteristics of Periodic and Non-periodic signals; Generation and Demodulation of AM, DSBSC, SSB and VSB Signals; Comparison of Amplitude Modulation Systems; Frequency Translation; FDM; Non – Linear Distortion.

2.                  ANGLE MODULATION SYSTEMS                                                                      8
Phase and Frequency Modulation; Single tone, Narrow Band and Wideband FM; Transmission Bandwidth; Generation and Demodulation of FM Signal.

3.                  NOISE THEORY                                                                                                    8
Review of Probability, Random Variables and Random Process; Guassian Process; Noise – Shot noise, Thermal noise and white noise; Narrow band noise, Noise temperature; Noise Figure.

4.         PERFORMANCE OF CW MODULATION SYSTEMS                                       10                                           
Superheterodyne Radio receiver and its characteristic; SNR; Noise in DSBSC systems using coherent detection; Noise in AM system using envelope detection and its FM system; FM threshold effect; Pre-emphasis and De-emphasis in FM; Comparison of performances.

5.         INFORMATION THEORY                                                                                     9

Discrete Messages and Information Content, Concept of Amount of Information, Average information, Entropy, Information rate, Source coding to increase average information per bit, Shannon-Fano coding, Huffman coding, Lempel-Ziv (LZ) coding, Shannon’s Theorem, Channel Capacity, Bandwidth- S/N trade-off, Mutual information and channel capacity, rate  distortion theory,  Lossy Source coding.      

TUTORIAL     15                                                            TOTAL : 60


  1. Dennis Roddy & John Coolen - Electronic Communication (IV Ed.), Prentice Hall of       India.
  2. Herbert Taub & Donald L Schilling – Principles of Communication Systems ( 3rd Edition ) – Tata McGraw    Hill, 2008.


  1. Simon Haykin, Communication Systems,  John Wiley & sons, NY, 4th Edition, 2001.
  2. Bruce Carlson - Communication Systems. (III Ed.),  Mc Graw Hill.
  3. B.P.Lathi, Modern Digital and Analog Communication Systems, Third Edition, Oxfod Press,2007.
  4. R.P Singh and S.D.Sapre, “Communication Systems – Analog and Digital”, Tata McGraw Hill, 2nd Edition, 2007.
  5. John G. Proakis, Masoud Salehi, Fundamentals of Communication Systems, Pearson Education, 2006.

No comments:

Post a Comment

Give your comment


Related Posts Plugin for WordPress, ...