Analog and Digital Communication

EC25C11:

Analog and Digital Communication

Course Objective:

To impart knowledge in analog and digital modulation and demodulation techniques, and to introduce the applications of communication systems.

Analog Modulation

Review of Fourier and Hilbert Transforms-Amplitude Modulation – AM, DSBSC, SSBSC, VSB– Spectral analysis of modulated signal, Angle modulation and demodulation: Narrow band, Wideband FM - Spectral analysis of modulated signal.

Digital Baseband Modulation

Schematic of digital communication systems, Sampling - Quantization – Uniform and non-uniform quantization – Quantization noise– Speech Coders: Companding laws of speech signals, PCM, DPCM, ADPCM, DM, ADM.

Source Coding and Channel Coding

Measure of information – Entropy – Source Coding: Source coding theorem, Shannon-Fano coding, Huffman Coding - Channel Coding: Shannon-Hartley law, Linear block codes, Cyclic codes, syndrome decoding, Convolutional codes, Viterbi decoding

Base Band Signaling

Line codes: RZ, NRZ, Manchester, Binary N-zero substitution codes - PSDs, ISI, Pulse shaping, Eye diagram

Band Pass Signaling

Generation and detection of coherent schemes: BPSK, BFSK, QPSK- BER and Power Spectral Density Comparison- Generation and detection of non-coherent schemes: BFSK, DPSK, Overview of QAM, MSK.

Suggested Activities: Quiz, simulations, assignment, project.

Weightage: Continuous Assessment: 40%, End Semester Examinations: 60%.

Assessment Methodology: Assignment (20%), Software activity (20%), Quiz (20%),

Internal Examinations (40%).

References:

1. Hsu, H. P. (2006). Analog and digital communications (Schaum’s outline series). Tata McGraw-Hill.

2. Sklar, B. (2007). Digital communications: Fundamentals and applications (2nd ed.). Pearson Education.

3. Roddy, D., & Coolen, J. (2006). Electronic communications (4th ed.). Prentice Hall of India.

4. Chandra Sekar, V. (2012). Analog communication. Oxford University Press.