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Posted Date: 09 Mar 2020      Posted By:: Shouvik Maj    Member Level: Silver  Points: 3 (₹ 3)

2019 B.E Electronics & Tele-Communication Engineering B.E Jadavpur University Electronics and Telecommunication Engineering- Digital Communication Systems (3rd Year First Semester) -2019 Question paper



Course: B.E Electronics & Tele-Communication Engineering   University/board: Jadavpur University

Are you looking for the old question papers of Jadavpur University Electronics and Telecommunication Engineering- Digital Communication Systems? Here is the previous year question paper from Jadavpur University. This is the original question paper from the ETCE Department for Third year first semester exam conducted by Jadavpur University in year 2019. Feel free to download the question paper from here and use it to prepare for your upcoming exams.



{Scroll Below to get the PDF Attachment file of the Original Question Paper}

Exam Name- B.E Electronics and Telecommunication Engineering Exam
3rd Year- 1st Semester

Subject- Digital Communication Systems

Total Time- Three Hours
Maximum Marks- 100

Syllabus

Signal detection:
Model of digital communication system, geometric interpretation of signals, Schwarz's
inequality, concepts of orthogonality and orthonormality, Gram-Schmidt
orthogonalization process, roles of multipliers and correlators, bank of correlators in
noisy environment, channel characterization, likelihood functions, memory less channel,
signal detection in presence of noise, maximum-likelihood detector, observation space,
decision regions, conditional probability of symbol error, error function, complementary
error function, correlation receiver, matched filter receiver, maximization of signal to
noise ratio, properties of matched filter.
Formatting in base band transmission techniques:
Basic block diagram of formatter, concepts of sampling in
transmitting multiple band limited signals, channel bandwidth of PAM signal, crosstalk,
concepts of signal reconstruction, quantization of signals, quantization error, PCM
system, uniform and non-uniform quantization, companding, µ-law and A-law
compressions, input-output characteristics, DPCM, DM, start-up, hunting, slope-overload
error, ADM, algorithms for varying step size, ? - ? modulator, signaling formats –
unipolar, bipolar, NRZ, RZ, Manchester and Gray with emphasis on power spectra, ISI,
eye pattern, concept of equalization, linear transversal equalizer.
Digital modulation techniques:
Digital modulation formats, coherent systems – BPSK, BFSK,
QPSK & MSK: signal constellation, average probability of symbol error, derivation of
transmitter and receiver, non-coherent systems – BFSK & DPSK: derivation of
transmitter and receiver, comparison of binary and quaternary modulation systems,
introductory idea of GMSK, QAM & OFDM.
Information theory and coding:
Concept of uncertainty, discrete messages, amount of information,
probability of occurrence, concept of binit, unit of information, Entropy, properties of
entropy, information rate, source coding theorem, Shanon-Fano algorithm, Shanon's
theorem, channel capacity, Gaussian channel, bandwidth-SNR trade off, Shannon's limit,
introductory idea of linear block code, generator and parity-check matrices, encoder,
error detection and correction, syndrome decoding, decoder.



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