UNIT - I PULSE DIGITAL MODULATION Elements of digital communication systems Advantages of digital communication systems Elements of PCM : Sampling, Quantization ,En Coding Quantization error , Companding in PCM systems Differential PCM systems (DPCM) Delta modulation & its drawbacks Adaptive delta modulation Comparison between PCM,DPCM,DM & ADM Line Coding Techniques PPT: PULSE DIGITAL MODULATION By T. Vamsi Krishna Technical Publications : Pulse Digital Modulation Study material -1 pdf Study Material 2Marks: Pulse Digital Modulation Study material-2 pdf JNTU Kakinada Handwritten Study Material.pdf JNTU Kakinada Handwritten Study Material-2.pdf TEXT BOOKS: Digital communications - Simon Haykin, John Wiley, 2005 Principles of Communication Systems – H. Taub and ...