Digital Communication Systems EC Syllabus for NIT Jalandhar

 Digital Communication Systems EC Syllabus for NIT Jalandhar

Sixth Semester
EC-304 Digital Communication Systems [3 1 0 4]

Unit-I

Introduction: Block Diagram of Digital Communication System, Advantages of Digital communication system over analog communication systems, Sampling theorem, Signal reconstruction in time domain, Practical and Flat Top Sampling, Sampling of Bandpass Signal, Aliasing Problem.

Waveform Coding Techniques: Discretization in time and amplitude, Linear quantizer, Quantization noise power calculation, Signal to Quantization noise ratio, Non-uniform quantizer, A-law & ?- law, companding; encoding and Pulse Code Modulation, Bandwidth of PCM, Differential pulse code modulation, Multiplexing PCM signals, Delta modulation, Idling noise and slope overload, Adaptive delta modulation, Adaptive DPCM, Comparison of PCM and DM.

Unit-II

Digital Base Band Transmission: Line Coding & its properties. NRZ & RZ types, signaling format for unipolar, Polar, bipolar (AMI) & Manchester coding and their power spectra (No derivation), HDB and B8ZS signaling, ISI, Nyquist criterion for zero ISI & raised cosine spectrum, Matched filter receiver, Derivation of its impulse response and peak pulse signal to noise ratio, Correlation detector decision threshold and error probability for binary unipolar (on-off) signaling.

Digital Modulation Techniques: Types of digital modulation, Wave forms for Amplitude, Frequency and Phase Shift Keying, Method of generation and detection of coherent & non-coherent binary ASK, FSK & PSK, Differential phase shift keying, Quadrature modulation techniques, M-ary FSK, Minimum Shift Keying (MSK), Probability of error and comparison of various digital modulation techniques.
A base band signal receiver, Probability of error, The Optimum filter, Matched Filter, Probability of error in Matched filter, Coherent reception, Coherent reception of ASK, PSK and FSK, Non-Coherent reception of ASK, FSK, PSK and QPSK, Calculation of error probability of BPSK and BFSK, Error probability for QPSK.

Unit-III

Multiple Access Techniques: Time division multiplexing, Frequency division multiplexing, code division multiplexing, Introduction to Wireless and Mobile Communication Systems

Books Recommended

1. Haykin Simon,“Communication Systems”, 4th Edition, Wiley publication.
2. Sklar, “Digital Communication- Fundamentals and Applications”, 2nd Edition, Pearson Education India.
3. Miller Gary M, “Modern Electronic Communication”, 6th edition, Prentice-Hall, (1999).
4. Nicolaos S Tzannes, “Communication and Radar Systems”, Prentice-Hall Inc, (1985).
5. Proakis J J, “Digital Communications”, 2nd Edition, Mc Graw –Hill
6. Wayne Tomsi, “Electronic Communication Systems, Fundamentals Through Advanced”, Fourth
Edition, Pearsons Edition.

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