Fundamentals of Communications

the fundamental of communication systems, all types of amplitude modulation (DSB-LC, DSB-SC, SSB, VSB, QAM) – AM modulators and demodulators, advantages and disadvantages-synchronization circuits - AM applications: Telephone channel multiplexing and superheterodyne receiver -Angle Modulation - Narrow band angle modulated signals - Spectrum of sinusoidal signal (N.B and W.B) - Generation of wideband FM (Indirect and Direct methods)-Demodulation (slope detector, PLL) - De-emphasis and pre-emphasis filtering compatible stereo - Intersystem comparison – Sampling process – PAM – Quantization (uniform and non uniform) – PCM – Time division multiplexing – Delta, and adaptive delta modulation – Differential PCM – random process – Stationary and ergodic processes – Mean, correlation, and covariance functions – Power spectral density – Narrow band noise.