Syllabus
Fundamental of communication systems, signals and information, system block diagram, performance metrics and data rate limits. Review of Fourier series and Transforms – Energy/Power Spectral Density.
Introduction to carrier modulation - Amplitude modulation, AM spectrum, power relations, double sideband suppressed carrier (DSBSC) and single sideband modulation (SSB) schemes, DSBSC/SSBSC spectrum, Vestigial sideband modulation and spectrum. Generation of AM signals, modulators and transmitters, product modulators, square-law modulators and balanced modulators. Frequency translation and frequency division multiplexing, Propagation characteristics of AM signals.
Frequency modulation (FM), Narrowband FM, Wideband FM, FM spectrum, Transmission bandwidth, Generation of FM signals: direct and indirect methods. Phase modulation-relationship between FM and PM signals. Radio Receivers - TRF and super-heterodyne receivers, Image frequency, Intermediate frequency (IF), Automatic gain control. AM demodulation - coherent detection, envelope (non-coherent) detection of AM signals, DSB-SC and SSB demodulation. FM demodulation - Basic FM demodulators, Amplitude limiting, ratio detector, PLL based FM detection, Pre-emphasis and de-emphasis in FM.
Text Books
- Lathi BP. Modern Digital and Analog Communication Systems 3e. Oxford University Press, 1998
- John G Proakis and M. Salehi, Communication systems engineering, Prentice Hall, 1994.
- Rodger E. Ziemer, and William H. Tranter. Principles of communications. John Wiley & Sons, 2014.
- Simon Haykin. Communication systems. John Wiley & Sons, 2008.
References
Course Outcomes (COs):
CO1: Understand and apply linear system theory, Fourier transforms, Laplace transforms for mathematical modelling and performance analysis of analog communication systems without noise
CO2: Understand subsystems in baseband and passband analog communication systems
CO3: Apply probability theory and stochastic processes for mathematical modelling and performance evaluation of analog communication systems
CO4: Create a functional design of an analog communication system which meets given requirements by a proper choice of different subsystems and their parameters, and by doing link analysis
CO5: Apply the knowledge gained from this course for understanding current analog communication systems and challenges