1. PREAMBLE OF DIGITAL COMMUNICATION

2. INDEX PREAMBLE STRUCTURE HOLLISTIC FIX KEY CONCEPT KEY RESEARCH AREA KEY APPLICATION INDUSTRIAL APPLICATION RESEARCH HOW WE STUDY KEY JOBS PROJECTS ONE CAN DO TRENDS 2

3. PREMBLE STRUCTURE TEACHERS INTRODUCTION 1. Deepti Gupta 2. CABIN LOCATION 3. TELEPHONENO. 4. EMAIL-ID 5. MEETING HOURS INTRODUCTION TO “DIGITAL COMMUNICATION” WHY? WHAT? WHERE? HOW? Holistic fix Key concepts Practical example Key research area Key applications Industrial application Research Key jobs and Companies How we study? Lecture plan Reference book Reference book,journalsjournals Projects one can doTrends 3

4. 1. NAME OF THE INSTRUCTOR – Deepti Gupta 2. CABIN LOCATION - 3. TELEPHONENO. - 4. EMAIL-ID – 5. MEETING HOURS– 4

5. HOLLISTIC FIX OF DIGITAL COMMUNICATION PREREQUISITES Basic Knowledge of Logarithms (Before 12 th standard) (12 th standard) Basic Knowledge of Probability. Usage of Probability & its applications Knowledge of Waveforms

6. HOLLISTIC FIX………CONTINUED PRE REQUISTES (5 th Semester)  Basic Principles of Communication  Conversion of Analog to Digital through Sampling Quantization Encoding  Different Modulation Techniques Amplitude Modulation Frequency Modulation Phase Modulation 6

7. HOLLISTIC FIX OF DC………CONTINUED ADVANCE COURSE (6 th -7 th SEM) Digital Signal Processing Satellite Communication Radar & Navigation Optical Fiber Communication ( 8 th SEM) Data & Communication Networks 7

8. HOLLISTIC FIX OF DC…….CONTINUED SCOPE IN RELATED FIELDS… Mobile Communication Wireless Technologies Microprocessors Integrated Circuits Aerospace Networking 8

9. Block Diagram of DC 9

10. Probability= Total no. of ways event can occur/Total no. of possible outcomes

11. Fig. showing certain dots selected from large no. of dots Also watch-- http://nptel.iitm.ac.in/showVideo.php?v=p6lze5nPkzk http://nptel.iitm.ac.in/showVideo.php?v=p6lze5nPkzk 11

12. Also watch-- http://nptel.iitm.ac.in/showVideo.php?v=nvmo9voRiSs http://nptel.iitm.ac.in/showVideo.php?v=nvmo9voRiSs 12

13. BASIC SAMPLING EXAMPLE FOR A POPULATION CENSUS Also watch-- http://nptel.iitm.ac.in/showVideo.php?v=WUCMavXbJo4http://nptel.iitm.ac.in/showVideo.php?v=WUCMavXbJo4 13

14. Next stage to obtain a Digital signal after Sampling is quantization Also watch-- http://nptel.iitm.ac.in/showVideo.php?v=oFEOryECzug http://nptel.iitm.ac.in/showVideo.php?v=oFEOryECzug 14

15. Main cause for degradation of pulse is noise Regenerative repeaters are used to get the pulse in its original form 15

16. Modulation is a technique where the properties of a carrier wave changes in accordance with the digital data. 16

17. 17

18. Transmitter & receiver section of the Communication Equipment should behave sequentially 18

19. Coding is done to remove the interference Once the coding is done, data becomes error free & can be detected uniquely The interference can cause the distortion of data. CHARLIE TO ALPHA!!!!!! CHARLIE TO ALPHA!!!!!!! 19

20. KEY RESEARCH AREA OF DIGITAL COMMUNICATION Research areas in cluster of DC: Fast Multiple Access more than the speed of light. To reduce the complexity & cost of Receiver & Transmitter used in DC components. To reduce the noise to a zero level Efficient long range communications To increase the Channel Capacity 20

21. PRIVATE SECTOR Texas Instruments www.ti.com Alcatel Lucent. www.alcatel-lucent.in NSN www.nokiasiemensnetworks.com ST microelectronics www.st.com Reliance Communications www.alcatel-lucent.in www.nokiasiemensnetworks.com www.st.com www.relianceinfo.com Bharti Airtel www.airtel.in 21

22. Electronics Corporation of India Limited. www.ecil.co.in Bharat Electronics Limited. www.bel-india.com Hindustan Aeronautics Limited. www.hal-india.com Defense Research & Development Organization. www.drdo.org Bharat Sanchar Nigam Limited. www.bsnl.co.in 22

23. 23 Tutorial PlanHandouts + LAN Server Reference SourcesHandouts + LAN Server Lecture PlanHandouts + LAN Server Individual AssignmentsLAN Server Group AssignmentsHandouts + LAN Server UPTU Paper MappingLAN Server I GoogleWill be shared by individual Gmail Ids

24. Kit based Projects: LED Based Water Level indicator FM Receiver Intercom 2 Way Digital Clock Wireless based Projects: Wireless Based Surveillance Wireless Video Transmitter Wireless RF Based Heart Beat Counter Tele Based Projects: Telephone call recorder Tele based Home security Optical Fiber based Data Communication 24

25. March 10, 1876- Telephone by Graham Bell Early 1900’s- Teletypewriter 1960- Character coding in the form of 8bit character 1967- Voice Digitization technique- PCM 1969-Caterphone 25

26. 1974- Data phone Digital Services 1980-Dial Modem Technology (FAX) 1984-Client Server Architectures 1990’s- VPN 26

27. Till date- Broadband ISDN, Cell based transmission, Satellite & GPS, VOIP, Video Confrencing Future Trends- High Speed communication across the galaxies Breaking the Shannon Limit 27

28. THANK YOU 28