**Instructor**

B. Srikrishna

Office: ESB 337A

Phone: 2257 4439

**Class Timings**

E Slot (Mon: 12-12.50 pm, Wed: 10-10.50 am, Thu: 9-9.50 am, Fri: 8-8.50 am)

**Course Content**

- Introduction:
- Elements of digital communication systems,
performance

measures, examples of communication channels,

mathematical models for communications channels

- Elements of digital communication systems,
performance
- General Concepts:
- Signal space representations
- Waveform channels, vector channels
- MAP and ML criteria for detection
- Sufficient statistics
- Communication over AWGN Channels:
- Channel model
- Sufficient statistics
- Matched filter detector
- Common signal constellations
- Probability of error
- Comparison of modulation schemes, channel capacity
- Communication over Band-limited Channels:
- Ideal band-limited channel model
- Pulse-shaping and Nyquist criterion
- Maximum possible symbol rate for zero ISI
- Arbitrary band-limited channel model
- Sufficient statistics
- ML sequence detection
- Linear equalization
- Decision feedback equalization
- Capacity of ISI channels, water-filling and OFDM

**Evaluation**

Quiz I : 20% (Feb 15, 2008)

Quiz II : 20% (Mar 24, 2008)

Final Exam : 60% (Apr 30, 2008)

**Textbook**

[1] J. G. Proakis, "Digital Communications", Fourth Edition, McGraw-Hill, 2001.

**References**

[2] John R. Barry, Edward A. Lee, David G. Messerschmitt, "Digital Communication," Third Edition, Kluwer Academic Publishers, 2004.

[3] J. M. Wozencraft, I. M. Jacobs, "Principles of Communication Engineering",
John Wiley, 1965.

[4] U. Madhow, "Fundamentals of Digital Communication," Cambridge University Press, 2008.

[5] B. Sklar, "Digital Communications: Fundamentals and Applications", Second
Edition, Prentice Hall, 2001.

**Problem sets**

Problem Set 1
Solution to Problem Set 1

Problem Set 2
Solution to Problem Set 2

Problem Set 3
Solution to Problem Set 3

Problem Set 4
Solution to Problem Set 4

Problem Set 5
Solution to Problem Set 5