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Justify that the probability of error in matched filter does not depend on the shape of input signal. Derive the relevant expression.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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Compare offset QPSK and non-offset QPSK.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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Define code rate, code efficiency, systematic and non-systematic in the context of linear block code.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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856
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Derive the expression for entropy? When Is entropy maximum?
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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584
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Encode the source using Huffman algorithm. Find the average code length and efficiency
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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i)Create a Huffman Tree for Huffman source coding technique to find the codeword and length of codewords for each source symbol.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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1.3k
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Draw the signal space diagram of 16-QASK and calculate the Euclidean and compare with 16- PSK.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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788
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Compare systematic and non-systematic codes.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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953
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What are different decoding methods of convolutional codes? Explain any one in detail.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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2.8k
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Prove that syndrome depends on error patterns and not on transmitted code word
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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1.3k
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Describe in brief four types of Trade-Offs that can be accomplished by using Error correcting code.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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Draw Encoder diagram, trellis diagram, using trellis find code vector if message vector is (101100).
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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A generator matrix of (6,3) linear block code is given by
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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1.7k
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Describe in convolution code, time domain approach, and Transform domain approach to determine encoder output.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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Design an encoder for systematic code generation and explain its working.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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1.9k
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Draw the syndrome calculator and explain how received message is corrected?
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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Draw the state diagram and Tree diagram
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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1.2k
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Explain the coherent and non-coherent digital modulation techniques.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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800
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Describe coherent method of binary FSK signals. Also draw power spectra for BFSK modulated signal.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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769
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10. State and explain the condition for orthogonality of the BFSK signal determine its spectrum and hence bandwidth requirement for transmission of signal.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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1.3k
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Explain in detail 16-QAM transmitter and receiver system. Draw and explain signal constellation diagram for 16-QAM.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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1.5k
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Write short note on Intersymbol interference (ISI) and Eye diagram.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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965
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For a Quadrature Phase Shift Keying (QPSK), Explain the modulator, demodulator, Bandwidth and advantages.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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1.8k
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Derive the expression for error probability BPSK system with coherent detection.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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969
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What do you mean by an eye diagram? What is its purpose? Mention the four parameters observed from the eye pattern. Explain with the help of suitable illustration.
digital communication updated 2.1 years ago by sagarkolekar ★ 11k
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