Overview of Digital Communication Systems, Fundamental tradeoffs in Communication Systems, Geometric representation of Signal waveforms, Signals and Noise. Binary modulation schemes, Optimum receiver for binary modulated signals in AWGN. M-ary Digital modulation, Optimum receiver for M-ary signals in AWGN, Union bound on the Probability of error. Generation, detection and Probability of Error analysis for M-ary PAM and M-ary ASK systems. Generation, detection and Probability of Error analysis for M-ary PSK and DPSK systems. Geometric representation of QAM Signals, Demodulation and Detection of QAM Signals, Probability of Error for QAM. PLL, Costas loop, Carrier phase estimation for PAM, PSK and QAM. Symbol synchronization, Early-Late gate, MMSE and ML methods. Modulation, detection and performance analysis of M-ary FSK and CPFSK signals. Digital transmission through bandlimited AWGN channels, Design and performance analysis of Channel Equalizers. Introduction to Information Theory, Source coding theorem and algorithms, Channel capacity, Modeling of communication channels. Introduction to channel fading and diversity combining techniques. Introduction to Spread Spectrum Communication Systems. Introduction to OFDM systems.