1. EC6501- Digital Communication L T P C 3 0 0 3 3 rd year 5 th semester By Jayaseelan. J AP/ ECE

2. OBJECTIVES: To know the principles of sampling & quantization To study the various waveform coding schemes To learn the various baseband transmission schemes To understand the various Band pass signaling schemes To know the fundamentals of channel coding

3. UNIT I SAMPLING & QUANTIZATION Low pass sampling Aliasing Signal Reconstruction Quantization - Uniform & non-uniform quantization Quantization noise Logarithmic Companding of speech signal PCM - TDM

4. UNIT II WAVEFORM CODING Prediction filtering DPCM Delta Modulation ADPCM ADM principles Linear Predictive Coding

5. UNIT III BASEBAND TRANSMISSION Properties of Line codes Power Spectral Density of Unipolar / Polar RZ & NRZ – Bipolar NRZ – Manchester ISI Nyquist criterion for distortionless transmission Pulse shaping Correlative coding Mary schemes Eye pattern Equalization

6. UNIT IV DIGITAL MODULATION SCHEME Geometric Representation of signals Generation, detection, PSD & BER of Coherent BPSK,BFSK & QPSK QAM Carrier Synchronization Structure of Non-coherent Receivers Principle of DPSK

7. UNIT V ERROR CONTROL CODING Channel coding theorem Linear Block codes Hamming codes Cyclic codes Convolutional codes Vitterbi Decoder

8. OUTCOMES Design PCM systems Design and implement base band transmission schemes Design and implement band pass signaling schemes Analyze the spectral characteristics of band pass signaling schemes and their noise performance Design error control coding schemes

9. REFERENCES J.S. Chithode, “Digital Communications”, 1 st edition, Technical Publications. S. Haykin, “Digital Communications”, John Wiley, 2005 B. Sklar, “Digital Communication Fundamentals and Applications”, 2nd Edition, Pearson Education, 2009 B.P.Lathi, “Modern Digital and Analog Communication Systems” 3rd Edition, Oxford University Press 2007. H P Hsu, Schaum Outline Series - “Analog and Digital Communications”, TMH 2006 J.G Proakis, “Digital Communication”, 4th Edition, Tata Mc Graw Hill Company, 2001.

10. Seminar Plan S.NOD.NOREG NONAME SEMINAR DETAILS 1 3501 821313106001 ANANDHI.R Low pass sampling – Aliasing 2 3502821313106002ANITHA.A Linear Predictive Coding 3 3503821313106003ARAVIND.R Properties of Line codes 4 3505821313106004BALATHANGAM.R Principle of DPSK 5 3508821313106007JAGADESH.R.P Cyclic codes 6 3509821313106008KRISHNA KUMAR.R Uniform & non-uniform quantization - quantization noise 7 3510821313106009KRISHNAVARTHINI.M ADM principles 8 3511821313106010KRISHNAVENI.A Power Spectral Density of Unipolar / Polar RZ & NRZ 9 3513821313106012MAHALAKSHMI.R QAM 10 3514821313106013MATHIPRIYA.P Hamming codes 11 3515821313106014MATHIVATHINI.V Logarithmic Companding of speech signal 12 3516821313106015MEHARAJ BEGUM.R ADPCM 13 3517821313106016PAVITHRA.R Bipolar NRZ - Manchester 14 3518821313106017PRAVEENA.T 15 3519821313106018PRIYADHARSHINI.K BFSK 15 3520821313106019RAMYA.G Linear Block codes 17 3521821313106020RAMYA DEVI.B PCM 18 3522821313106021RANJITHA.R Delta Modulation 19 3523821313106022SABEENA.P ISI 20 3524821313106023SANKARI.M QPSK 21 3525821313106024SHREEN SITHARA.M Vitterbi Decoder 22 3526821313106025SIVAKAMI.N TDM 23 3527821313106026SUGANYA.P DPCM 24 3528821313106027SWATHI.K Eye pattern 25 3529821313106028VIDHYA.J Generation, detection, PSD & BER of Coherent BPSK 26 3530821313106029VISWADHARSHINI.G Convolutional codes 27 3561821313106301NARESH KUMAR. K Signal Reconstruction 28 3562821313106302PRAVEEN.N Prediction filtering 29 3563821313106701PRITHIVIRAJ.G Correlative coding 30 3564821313106303VINOTH KUMAR.S structure of Non-coherent Receivers

11. Assignment Plan S.NOD.NOREG NONAME Assignment Details UNIT-IUNIT-IIUNIT-IIIUNIT-IVUNIT-V 1 3501 821313106001 ANANDHI.R Low pass sampling – Aliasing Linear Predictive Coding Properties of Line codes Principle of DPSKCyclic codes 2 3502821313106002ANITHA.A 3 3503821313106003ARAVIND.R 4 3505821313106004BALATHANGAM.R 5 3508821313106007JAGADESH.R.P 6 3509821313106008KRISHNA KUMAR.R Uniform & non- uniform quantization - quantization noise ADM principles Power Spectral Density of Unipolar / Polar RZ & NRZ QAMHamming codes 7 3510821313106009 KRISHNAVARTHINI. M 8 3511821313106010KRISHNAVENI.A 9 3513821313106012MAHALAKSHMI.R 10 3514821313106013MATHIPRIYA.P 11 3515821313106014MATHIVATHINI.V Logarithmic Companding of speech signal ADPCM Bipolar NRZ - Manchester BFSKLinear Block codes 12 3516821313106015MEHARAJ BEGUM.R 13 3517821313106016PAVITHRA.R 14 3518821313106017PRAVEENA.T 15 3519821313106018PRIYADHARSHINI.K 15 3521821313106019RAMYA.G PCMDelta ModulationISIQPSKVitterbi Decoder 17 3520821313106020RAMYA DEVI.B 18 3522821313106021RANJITHA.R 19 3523821313106022SABEENA.P 20 3524821313106023SANKARI.M 21 3525821313106024SHREEN SITHARA.M TDMDPCMEye pattern Generation, detection, PSD & BER of Coherent BPSK Convolutional codes 22 3526821313106025SIVAKAMI.N 23 3527821313106026SUGANYA.P 24 3528821313106027SWATHI.K 25 3529821313106028VIDHYA.J 26 3530821313106029VISWADHARSHINI.G Signal Reconstruction Prediction filteringCorrelative coding structure of Non- coherent Receivers Channel coding theorem 27 3561821313106301NARESH KUMAR. K 28 3562821313106302PRAVEEN.N 29 3563821313106701PRITHIVIRAJ.G 30 3564821313106303VINOTH KUMAR.S

12. Important URL’s https://www.youtube.com/watch?v=3XCSLs_thTg https://www.youtube.com/watch?v=Ez__KA00hD8 https://www.youtube.com/watch?v=zvN0lio7GbU http://www.powershow.com/view/1329aa- OGViN/Digital_Communications_CS3282_powerpoint_ppt_presentation http://www.powershow.com/view/1329aa- OGViN/Digital_Communications_CS3282_powerpoint_ppt_presentation https://books.google.co.in/books?id=3GGVSEHsNSgC&pg=SA3- PA79&dq=cyclic+codes&hl=en&sa=X&ei=q5xyVfPCEIO1uQS6v4CQCA&ved=0CCAQ6AEwAQ https://books.google.co.in/books?id=3GGVSEHsNSgC&pg=SA3- PA79&dq=cyclic+codes&hl=en&sa=X&ei=q5xyVfPCEIO1uQS6v4CQCA&ved=0CCAQ6AEwAQ https://books.google.co.in/books?id=AizEjrRIEHYC&pg=PA131&dq=cyclic+codes&hl=en&sa=X&ei=q 5xyVfPCEIO1uQS6v4CQCA&ved=0CCUQ6AEwAg#v=onepage&q=cyclic%20codes&f=false https://books.google.co.in/books?id=AizEjrRIEHYC&pg=PA131&dq=cyclic+codes&hl=en&sa=X&ei=q 5xyVfPCEIO1uQS6v4CQCA&ved=0CCUQ6AEwAg#v=onepage&q=cyclic%20codes&f=false https://books.google.co.in/books?id=qhHsSlazGrQC&pg=PA963&dq=Uniform+%26+non- uniform+quantization+- +quantization+noise&hl=en&sa=X&ei=E51yVZroK8KpuwTHjoLAAQ&ved=0CBwQ6AEwAA#v=onepa ge&q=Uniform%20%26%20non-uniform%20quantization%20-%20quantization%20noise&f=false https://books.google.co.in/books?id=qhHsSlazGrQC&pg=PA963&dq=Uniform+%26+non- uniform+quantization+- +quantization+noise&hl=en&sa=X&ei=E51yVZroK8KpuwTHjoLAAQ&ved=0CBwQ6AEwAA#v=onepa ge&q=Uniform%20%26%20non-uniform%20quantization%20-%20quantization%20noise&f=false https://books.google.co.in/books?id=x4jOplMbLx0C&pg=PA127&dq=Uniform+%26+non- uniform+quantization+- +quantization+noise&hl=en&sa=X&ei=E51yVZroK8KpuwTHjoLAAQ&ved=0CCEQ6AEwAQ#v=onepag e&q=Uniform%20%26%20non-uniform%20quantization%20-%20quantization%20noise&f=false https://books.google.co.in/books?id=x4jOplMbLx0C&pg=PA127&dq=Uniform+%26+non- uniform+quantization+- +quantization+noise&hl=en&sa=X&ei=E51yVZroK8KpuwTHjoLAAQ&ved=0CCEQ6AEwAQ#v=onepag e&q=Uniform%20%26%20non-uniform%20quantization%20-%20quantization%20noise&f=false https://books.google.co.in/books?id=TuvKdwNMS48C&pg=PA82&dq=Uniform+%26+non- uniform+quantization+- +quantization+noise&hl=en&sa=X&ei=E51yVZroK8KpuwTHjoLAAQ&ved=0CCwQ6AEwAw#v=onepa ge&q=Uniform%20%26%20non-uniform%20quantization%20-%20quantization%20noise&f=false https://books.google.co.in/books?id=TuvKdwNMS48C&pg=PA82&dq=Uniform+%26+non- uniform+quantization+- +quantization+noise&hl=en&sa=X&ei=E51yVZroK8KpuwTHjoLAAQ&ved=0CCwQ6AEwAw#v=onepa ge&q=Uniform%20%26%20non-uniform%20quantization%20-%20quantization%20noise&f=false

13. Thank You