Communications Principles

Analysis and Synthesis of Waveforms: Fourier series and transform analysis, filtering. Amplitude modulation (AM); double sideband, single sideband and vestigial sideband modulation schemes; simple modulator, power and bandwidth performance. Angle modulation: frequency modulation. Phase modulation, bandwidth requirements, clippers and limiters. Amplitude modulation signal reception: discrimination, frequency tracking loop, phased lock loop and noise performance. Commercial radio systems. Transmission Media: Attenuation in open space, air cable and fibre channels; construction of cables and fibres, sampling theorem, pulse amplitude modulation, pulse width modulation, multiplexing, quantisation systems and pulse code modulation, delta modulation, causes and correction of errors in Pulse code modulation (PCM) and Differential Modulation (DM), ideal and matched filters, frequency acquisition, phase referencing and timing. Line codes, block encoding and Shanon’s theorem. Antenna principles. Communication systems and devices: microphones, loudspeakers, broadcasting, the radio, the television, satellite communication