UNIT- II DIGITAL MODULATION TECHNIQUES : Introduction Binary Amplitude Shift Keying Binary Frequency Shift Keying Binary Phase Shift Keying Differential Phase Shift Keying Deferentially Encoded Phase Shift Keying Quadrature Phase Shift Keying Extra: Self study : Continuous Phase Frequency shift keying M-ary Phase Shift Keying, Amplitude Shift Keying , Frequency Shift Keying Similarity of Binary Frequency Shift Keying and Binary Phase Shift Keying. PPT : Digital Modulation Techniques by T.Vamsi Krishna Study Material 2 Marks : Digital Modulation Techniques Study Material Pdf Springer Text book Study Material for Digital Modulation Techniques Note : Please Prefer Simon Haykin for Digital Communication