Home / ModelQuestions / KTU B.Tech S6 ModelQuestionPaper -Electronics & Communication Engineering

KTU B.Tech S6 ModelQuestionPaper -Electronics & Communication Engineering

KTU B.Tech S6 ModelQuestionPaper -Electronics & Communication Engineering

 

clickhereEC 302 Digital Communication
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clickhereEC304 VLSI
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clickhereEC306 Antenna & Wave Propagation
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clickhereEC308 Embedded System
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clickhereEC312 Object Oriented Programming
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clickhereEC364 Computer Vision[Elective]
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clickhere  EC366 Real Time Operating Systems[Elective]
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clickhereEC368 Robotics[Elective]
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clickhereEC370 Digital Image Processing[Elective] 
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KTU B.Tech S6 ModelQuestionPaper -Electronics & Communication Engineering

 

 

 

 

 

EC302 Digital Communication

MODULE I

Overview of Random variables and Random process: Random variables–continuous and Discrete, random process- Stationarity, Autocorrelation and power spectral density, Transmission of Random Process through LTI systems, PSD, AWGN  Pulse Code Modulation (PCM): Pulse Modulation, Sampling process, Performance comparison of various sampling techniques Aliasing, Reconstruction, PAM, Quantization, Noise in PCM system Modifications of PCM: Delta modulation, DPCM, ADPCM, ADM, Performance comparison of various pulse modulation schemes, Line codes, PSD of various Line codes

MODULE II

Transmission over baseband channel: Matched filter, Inter Symbol Interference (ISI), Nyquist Criteria for zero ISI, Ideal solution, Raised cosine spectrum, Eye Pattern  Correlative Level Coding – Duobinary coding, precoding, Modified duobinary coding, Generalized Partial response signalling.

FIRST INTERNAL EXAM

MODULE III

Signal Space Analysis: Geometric representation of signals, Gram Schmidt orthogonalization procedure. Transmission Over AWGN Channel: Conversion of the continuous AWGN channel into a vector channel, Likelihood function, Maximum Likelihood Decoding, Correlation Receiver

MODULE IV

Digital Modulation Schemes: Pass band transmission model, Coherent Modulation Schemes- BPSK, QPSK, BFSK. Non-Coherent orthogonal modulation schemes, Differential Phase Shift Keying (DPSK) Detection of Binary modulation schemes in the presence of noise, BER for BPSK, QPSK, BFSK

SECOND INTERNAL EXAM

MODULE V

Pseudo–noise sequences: Properties of PN sequences. Generation of PN Sequences, generator polynomials, Maximal length codes and Gold Codes.
Importance of synchronization: Carrier, frame and symbol/chip synchronization techniques.  Spread spectrum communication: Direct sequence spread spectrum with coherent binary phase shift keying, Processing gain, Probability of error, Anti-jam Characteristics, Frequency Hop spread spectrum with MFSK, Slow and Fast frequency hopping.

MODULE VI

Multipath channels: classification, Coherence time, Coherence bandwidth, Statistical characterization of multi path channels, Binary signalling over a Rayleigh fading channel.Diversity techniques: Diversity in time, frequency and space. Multiple Access Techniques: TDMA, FDMA, CDMA and SDMA – RAKE receiver, Introduction to Multicarrier communication- OFDM

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