PREAMBLE OF DIGITAL COMMUNICATION
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
PREMBLE STRUCTURE TEACHERS INTRODUCTION 1. Deepti Gupta 2. CABIN LOCATION 3. TELEPHONENO 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
1. NAME OF THE INSTRUCTOR – Deepti Gupta 2. CABIN LOCATION - 3. TELEPHONENO ID – 5. MEETING HOURS– 4
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
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
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
HOLLISTIC FIX OF DC…….CONTINUED SCOPE IN RELATED FIELDS… Mobile Communication Wireless Technologies Microprocessors Integrated Circuits Aerospace Networking 8
Block Diagram of DC 9
Probability= Total no. of ways event can occur/Total no. of possible outcomes
Fig. showing certain dots selected from large no. of dots Also watch
Also watch
BASIC SAMPLING EXAMPLE FOR A POPULATION CENSUS Also watch
Next stage to obtain a Digital signal after Sampling is quantization Also watch
Main cause for degradation of pulse is noise Regenerative repeaters are used to get the pulse in its original form 15
Modulation is a technique where the properties of a carrier wave changes in accordance with the digital data. 16
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Transmitter & receiver section of the Communication Equipment should behave sequentially 18
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
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
PRIVATE SECTOR Texas Instruments Alcatel Lucent. NSN ST microelectronics Reliance Communications Bharti Airtel 21
Electronics Corporation of India Limited. Bharat Electronics Limited. Hindustan Aeronautics Limited. Defense Research & Development Organization. Bharat Sanchar Nigam Limited. 22
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
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
March 10, Telephone by Graham Bell Early 1900’s- Teletypewriter Character coding in the form of 8bit character Voice Digitization technique- PCM 1969-Caterphone 25
1974- Data phone Digital Services 1980-Dial Modem Technology (FAX) 1984-Client Server Architectures 1990’s- VPN 26
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
THANK YOU 28