Digital communication is a fundamental course in the electronics and communication stream.The objectives of this course is to introduce the basic principles that underlie the analysis and successful design of a digital communication system. Digital communication systems have been used in all modern communication systems. Emphasis is placed on understanding system design goals and to optimize the tradeoff among basic system parameters such as signal-to-noise ratio, bandwidth, etc.
INTENDED AUDIENCE: Electronics and Communications Engineering students and professionals
CORE/ELECTIVE: Core/Elective
UG/PG: UG/PG
PREREQUISITES: Basic idea of Signals and Systems, and probability theory
INDUSTRY SUPPORT: Telecommunication Industry, e.g., Qualcomm,Ericson, Huawei
5425 students have enrolled already!!
ABOUT THE INSTRUCTOR:
Abhishek Dixit, M.Tech. (IITD: 2010) and Ph.D. (Ghent University, Belgium: 2014) Professor Abhishek Dixit is working with the Department of Electrical Engineering, IndianInstitute of Technology Delhi, New Delhi (India) since December 2015. His research interests pertain to the domains of digital communications, error control codes, optical communications, optical networks, optical wireless communication links and networks, and fiber-wireless converged networks.
COURSE LAYOUT:
Week 1 : Introduction to digital communications: Interfaces and channels for digital communications Week 2 : Geometric representation of signals: Geometric representation of signals, Gram-Schmidt orthogonalization, Geometric interpretation of signals Week 3 : Review of random variables: Introduction to random variables, joint probability density function, characteristic functions, derived distributions Week 4 : Review of random process: Introduction to random processes, Gaussian process, Linear functional of random process, Stationary and wide sense stationary random process, Power spectral density, White Gaussian noise Week 6 : Waveform coding: Pulse code modulation, Differential pulse codemodulation, and delta modulation Week 7 : Modulation - I: Complex baseband representation, degrees of freedoms, linear modulation, spectral description of linearly modulated signals Week 8 : Modulation – II: Nyquist criterion, raised cosine family of pulses, Intersymbol interference Week 9 : Modulation - III: Coherent binary modulation formats, e.g., ASK, FSK and PSK, Coherent QAM, M-ary modulation techniques, Orthogonal and biorthogonal modulation Week 10 : Hypothesis testing: Optimum decision region in AWGN, Maximum Aposteriori Probability (MAP) and Maximum Likelihood Receiver, Theorem of irrelevance Week 11 : Performance analysis of binary and M-ary signaling schemes: Performance analysis of binary signaling schemes, performance analysis of M-ary signaling schemes, bit-level demodulation Week 11 : Non-coherent communication: Composite hypothesis testing, optimal demodulation for non-coherent communication Week 12 : Performance analysis of non-coherent communication: Performance of binary and M-ary non-coherent communication
SUGGESTED READING MATERIALS:
1. Robert G. Gallager, “Principles of Digital Communication,” Cambridge University Press, 2008. 2. Upamanyu Madhow, “Fundamentals of Digital Communication,” Cambridge University Press, 2008. 3. John M. Wozencraft and Irwin M. Jacobs, “Principles of Communication Engineering,” Wiley, 1965. 4. John G. Proakis and Masoud Salehi, “Fundamentals of Communication Systems,” Pearson Education India, 2007. 5. Simon Haykin, “Communications Systems,” John Wiley, 2008. 6. Amos Lapidoth, “A foundation in Digital Communication,” Cambridge University Press, 2017. 7. Bernard Sklar, “Digital Communications,” Prentice Hall, 2001.
CERTIFICATION EXAM :
The exam is optional for a fee.
Date and Time of Exams: April 27 2019(Saturday). Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published.
CERTIFICATION:
Final score will be calculated as : 25% assignment score + 75% final exam score
25% assignment score is calculated as 25% of average of Best 8 out of 12 assignments
E-Certificate will be given to those who register and write the exam and score greater than or equal to 40% final score. Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras.It will be e-verifiable at nptel.ac.in/noc.
