Communication System-I

Syllabus

Modulation: AM, DSB/SC, SSB, VSB, Angle modulation, NBFM, WBFM, Diode detector, Frequency discriminator, AM & FM, Transmitter.

Demodulation: AM and FM signals Radio Receivers – AM & FM (Block diagram)

Noise Analysis: Performance of AM & FM Systems, in presence of noise Threshold in AM & FM,

Demodulation, pre emphasis and De emphasis, in FM Systems.

Digital Communication: Sampling, Quantization, quantization noise, Coding, Pulse code Modulation;

differential PCM, ADPCM, Relative advantages and dis-advantages. Delta modulation, PWM & PPM.

Digital Modulation Techniques: Binary transmission systems: Applications and types ASK,FSK,PSK, M-FSK DPSK, QPSK,QAM Schemes

Signal constellation.

Because of COVID-19 Outbreak, the course cannot be conducted in person, hence we will cover this course with the help of online lectures available on NPTEL. I will also prepare some handouts with due time. There will be some interactive sessions on Zoom for doubt clarification and problem solving skills. Regular homework and assignments/tutorials will be uploaded on this course webpage.

Lecture Schedule

Lecture 1: Revision of basics tools for communication systems theory like Fourier series, Fourier Transform and related properties. Link to NPTEL Video