Simple notes for analog & digital communication.It almost cover all important topics which are indexed below chapter wise
Chapter 1. Time domain and frequency domain of signal
Time/Frequency Domain Representation of Signals
Fourier Transform and its properties
Energy density
Power Density
Parseval's Theorem
Impulse Function
Impulse response
Convolution
Impulse response of ideal low pass filte
Chapter 2. Base band signal
Baseband signals
Need of modulation
Introduction of modulations techniques
Amplitude Modulation
BANDWIDTH
Power distribution
Wave equation
Synchronous detection technique
Frequency and phase modulation equation
Chapter 3. Sampling of signal
Sampling of signal
Sampling theorem for low pass and Band pass signal
Pulse Amplitude Modulation
Pulse Code Modulation
Time Division Multiplexing
Natural and flat top
Pulse-position modulation
Quantization Process
Data rate and Baud rate