EC8491 Communication Theory Lecture Notes Syllabus Book Previous 2 13 15 Marks Anna University Important Question Bank With Answers Regulation 2017 Study Materials Pdf Ppt

EC8491 Communication Theory  Lecture Notes Syllabus Book Previous  2 13 15 Marks  Anna University Important Question Bank With Answers  Regulation 2017 Study Materials Pdf Ppt   

EC8491 COMMUNICATION THEORY

UNIT I AMPLITUDE MODULATION

Amplitude Modulation- DSBSC, DSBFC, SSB, VSB - Modulation index, Spectra, Power relations

and Bandwidth – AM Generation – Square law and Switching modulator, DSBSC Generation –Balanced and Ring Modulator, SSB Generation – Filter, Phase Shift and Third Methods, VSB Generation – Filter Method, Hilbert Transform, Pre-envelope & complex envelope –comparison of

different AM techniques, Superheterodyne Receiver

UNIT II ANGLE MODULATION 

Phase and frequency modulation, Narrow Band and Wide band FM – Modulation index, Spectra,

Power relations and Transmission Bandwidth - FM modulation –Direct and Indirect methods, FM

Demodulation – FM to AM conversion, FM Discriminator - PLL as FM Demodulator.

UNIT III RANDOM PROCESS 

Random variables, Random Process, Stationary Processes, Mean, Correlation & Covariance functions, Power Spectral Density, Ergodic Processes, Gaussian Process, Transmission of a Random Process Through a LTI filter.

UNIT IV NOISE CHARACTERIZATION 

Noise sources – Noise figure, noise temperature and noise bandwidth – Noise in cascaded systems. Representation of Narrow band noise –In-phase and quadrature, Envelope and Phase – Noise performance analysis in AM & FM systems – Threshold effect, Pre-emphasis and deemphasis for FM.

UNIT V SAMPLING & QUANTIZATION 

Low pass sampling – Aliasing- Signal Reconstruction-Quantization - Uniform & non-uniform  quantization - quantization noise - Logarithmic Companding –PAM, PPM, PWM, PCM – TDM, FDM.

TEXT BOOKS:

1. J.G.Proakis, M.Salehi, “Fundamentals of Communication Systems”, Pearson Education 2014. (UNIT I-IV)

2. Simon Haykin, “Communication Systems”, 4th Edition, Wiley, 2014.(UNIT I-V) 

REFERENCES

1. B.P.Lathi, “Modern Digital and Analog Communication Systems”, 3rd Edition, Oxford University Press, 2007.

2. D.Roody, J.Coolen, ―Electronic Communications, 4th edition PHI 2006

3. A.Papoulis, “Probability, Random variables and Stochastic Processes”, McGraw Hill, 3rd edition, 1991.

4. B.Sklar, “Digital Communications Fundamentals and Applications”, 2nd Edition Pearson Education 2007

5. H P Hsu, Schaum Outline Series - “Analog and Digital Communications” TMH 2006

6. Couch.L., "Modern Communication Systems", Pearson, 2001.

EC8491 Communication Theory  Lecture Notes Syllabus Book Previous  2 13 15 Marks  Anna University Important Question Bank With Answers  Regulation 2017 Study Materials Pdf Ppt