COMMUNICATION SYSTEMS
COURSE OBJECTIVES:
- To introduce Analog Modulation Schemes
- To impart knowledge in random process
- To study various Digital techniques
- To introduce the importance of sampling & quantization
- To impart knowledge in demodulation techniques
- To enhance the class room teaching using smart connectivity instruments
UNIT I AMPLITUDE MODULATION 9
Review of signals and systems, Time and Frequency domain representation of signals, Principles of Amplitude Modulation Systems– DSB, SSB and VSB modulations. Angle Modulation, Representation of FM and PM signals, Spectral characteristics of angle modulated signals. SSB Generation – Filter and Phase Shift Methods, VSB Generation – Filter Method, Hilbert Transform, Pre-envelope & complex envelope AM techniques, Superheterodyne Receiver.
UNIT II RANDOM PROCESS & SAMPLING 9
Review of probability and random process. Gaussian and white noise characteristics, Noise in amplitude modulation systems, Noise in Frequency modulation systems. Pre-emphasis and De- emphasis, Threshold effect in angle modulation.
Low pass sampling – Aliasing- Signal Reconstruction-Quantization – Uniform & non-uniform quantization – quantization noise – Nyquist criterion- Logarithmic Companding –PAM, PPM, PWM, PCM – TDM, FDM
UNIT III DIGITAL TECHNIQUES 9
Pulse modulation Differential pulse code modulation. Delta modulation, Noise considerations in PCM,, Digital Multiplexers, Channel coding theorem – Linear Block codes – Hamming codes – Cyclic codes – Convolutional codes – Viterbi Decoder
UNIT IV DIGITAL MODULATION SCHEME 9
Geometric Representation of signals – Generation, detection, IQ representation, PSD & BER of Coherent BPSK, BFSK, & QPSK – QAM – Carrier Synchronization – Structure of Non-coherent Receivers Synchronization and Carrier Recovery for Digital modulation, Spectrum Analysis – Occupied bandwidth – Adjacent channel power, EVM, Principle of DPSK
UNIT V DEMODULATION TECHNIQUES 9
Elements of Detection Theory, Optimum detection of signals in noise, Coherent communication with waveforms- Probability of Error evaluations. Baseband Pulse Transmission- Inter symbol Interference, Optimum demodulation of digital signals over band-limited channels.
TOTAL: 45 PERIODS
COURSE OUTCOMES:
At the end of the course students will be able to
CO1: Gain knowledge in amplitude modulation techniques
CO2: Understand the concepts of Random Process to the design of communication systems
CO3: Gain knowledge in digital techniques
CO4: Gain knowledge in sampling and quantization
CO5: Understand the importance of demodulation techniques
TEXTBOOKS :
- Simon Haykins,” Communication Systems”, Wiley, 5th Edition, (Unit I – V)
- P.Lathi, “Modern Digital and Analog Communication Systems”, 4th Edition, Oxford University Press, 2011.
REFERENCES :
- Wayner Tomasi, Electronic Communication System, 5th Edition, Pearson Education,2008.
- Roody, J.Coolen, Electronic Communications, 4th edition PHI 2006
- Papoulis, “Probability, Random variables and Stochastic Processes”, McGraw Hill, 3rd edition, 1991.
- Sklar, “Digital Communications Fundamentals and Applications”, 2nd Edition Pearson Education 2007
- H P Hsu, Schaum Outline Series – “Analog and Digital Communications” TMH 2006
- L., “Modern Communication Systems”, Pearson, 2001
Click Here to Download Question Paper- Apr/May 2017
Click Here to Download Question Paper- Apr/May 2018
Click Here to Download Question Paper- Nov/Dec 2017
Click Here to Download Anna University Syllabus
Anna University Syllabus Regulation 21 (Sem-2)CIRCUIT ANALYSIS
Anna University Syllabus Regulation 21 (Sem-2)BASIC ELECTRICAL AND INSTRUMENTATION ENGINEERING
Anna University Syllabus Regulation 21 (ECE Sem-2) Physics
Anna University Syllabus Regulation 21 (Sem-2) Mathematics-2
Anna University Syllabus Regulation 21 (Sem-2) English
You’re so cool! I don’t suppose I’ve truly read through anything like that before. So great to discover somebody with a few genuine thoughts on this subject matter. Really.. thank you for starting this up. This site is one thing that is required on the internet, someone with some originality.Hey There. I found your blog using msn. This is a really well written article. I will make sure to bookmark it and return to read more of your useful information. Thanks for the post. I will definitely return.I’m often to blogging and i really appreciate your content. The article has actually peaks my interest. I’m going to bookmark your web site and maintain checking for brand spanking new information.Great post thank you. Hello Administ .cami halısıDefinitely, what a great blog and revealing posts, I definitely will bookmark your site. Best Regards!My website: домашний секс со студенткамиPretty nice post. I just stumbled upon your weblog and wished to saythat I have really enjoyed surfing around your weblog posts.After all I will be subscribing on your rss feed and I am hopingyou write once more very soon!
I agree with your point of view, your article has given me a lot of help and benefited me a lot. Thanks. Hope you continue to write such excellent articles.
For my thesis, I consulted a lot of information, read your article made me feel a lot, benefited me a lot from it, thank you for your help. Thanks!
Reading your article has greatly helped me, and I agree with you. But I still have some questions. Can you help me? I will pay attention to your answer. thank you.
The point of view of your article has taught me a lot, and I already know how to improve the paper on gate.oi, thank you.