Principles of Communication :-
- Unit - I :
Introduction: Communication Process, Source of Information, Communication channels, base-band and pass-band signals, representation of signal and systems, the modulation process, primary communication resources, analog versus digital communications.
- Unit - II :
Amplitude modulation: Frequency division and time division multiplexing, suppressed carrier systems, single side band transmission, amplitude modulation with carrier power, effect of frequency and phase errors in synchronous detection, comparison of various AM systems, vestigial side band transmission
- Unit - III :
Angle Modulation: Narrow and wide band FM, multiple frequency and square wave modulation, linear and non-linear modulation, phase modulation, Demodulation of FM signals, noise reduction.
Pulse Modulation: Pulse amplitude modulation, other forms of pulse modulation, band width required for transmission PAM signals, Comparison of frequency division and time division multiplexed systems
- Unit - IV :
Noise: Different types of noise, noise calculations, equivalent noise band width, noise figures, effective noise temperature, noise figure in cascaded stages.
- Unit - V :
Performance of Communication Systems : Noise calculation in communication systems, noise in Amplitude Modulated, Angle modulated and Pulse Modulated systems, comparison of coded and un-coded systems
Introduction to Information Transmission:Measure of information, channel capacity, transmission of continuous signals, exchange of band width for signal to noise ratio, Efficiency of PCM systems