Department of Electronics and Communication Engineering 1

Size: px
Start display at page:

Download "Department of Electronics and Communication Engineering 1"

Transcription

1 UNIT I SAMPLING AND QUANTIZATION Pulse Modulation 1. Explain in detail the generation of PWM and PPM signals (16) (M/J 2011) 2. Explain in detail the concept of PWM and PAM (16) (N/D 2012) 3. What is the classification of communication channels? Explain the mathematical model of any two communications channels. (16) (M/J 2011) 4. Draw a neat block diagram of a typical digital communication system and explain the functions of the key signal processing blocks.( 16) (N/D 2010) 5. Distinguish between base band signaling and band pass signaling. (6) (N/D 2010) Channel Classification 6. Explain Binary symmetric channel and Gaussian channel with supporting mathematical models. (10) (N/D 2010) 7. Explain in detail, the mathematical models of communication channel. (16) (N/D 2011) Geometric Representation of Signals 8. Derive an expression for geometrical representation of a signal. (8) (M/J2006) 9. Explain the Gram Schmidt Orthogonalisation Procedure for obtaining the basis set. (8) (M/J 2012) 10. Explain in detail the Gram Schmidt Orthogonalisation Procedure (16) (N/D 2011) 11. Determine the orthonormal basis set for the following set of signals using Gram- Schmidt orthogonalization procedure. (16) (N/D 2006) Spectral Waveform Coding 1. Explain in detail, the uniform quantization process. (8) (MAY 2011) 2. Explain in detail, the temporal waveform coding. (8) (MAY 2011) 3. Explain spectral waveform encoding process. (8) (MAY 2011) 4. Compare the various speech encoding techniques. (8) (MAY 2011) Sampling Department of Electronics and Communication Engineering 1

2 5. State Nyquist sampling theorem. What is the validity of an analog signal having Fourier transform X(f) that is zero outside the interval ( -fm < f < +fm)? (8) (DEC2010) 6. With necessary sketches and expressions, explain flat top sampling. (8) (APR/MAY2005) 7. With necessary derivation, prove that if a signal contains no frequencies higher than W hertz, it can be reconstructed from its samples at a sequence of points spaced 1/2W seconds apart. (8) (APR/MAY2005; MAY/JUN2006) 8. With neat diagram and necessary equations, explain the concept of sampling and reconstruction of signals. (8) (MAY/JUNE 2009) UNIT-II BASEBAND FORMATTING TECHNIQUES Encoding Techniques for analog sources 9. Draw the block diagram of differential PCM and explain the function of each block.(8) 10. Derive an expression for the quantization noise and Signal to Noise Ratio in a PCM system that uses uniform quantizer.(10) 11. A sinusoidal signal is transmitted using PCM. An output SNR of 55.8 db is required. Find the number of representation levels required to achieve this performance. (6) 12. Derive the expression for SNR in PCM system and compare it with delta modulation. Explain the process to improve SNR in PCM system. (10) (MAY/JUN2006) 13. Explain the process of quantization, encoding and decoding in PCM. How is DPCM better than PCM? (16) (MAY/JUN 2007) 14. Explain uniform and non uniform quantization. (4) (APR/MAY2008) 15. (a) Draw the block diagram of Differential Pulse Code Modulation scheme and explain the principle in detail.(10) (APR/MAY 2008) (b) Derive an expression for the processing gain of a DPCM system. (4) (APR/MAY 2008) (c) An existing standard PCM system for voice signal is replaced by a DPCM of processing gain 6dB, while maintaining the (SNR) Q. What is the reduction in the bit rate achieved by DPCM? (3) (APR/MAY 2008) 16. (a) Determine the number of quantization levels for an uniform quantizer (4) (b) What is the need of non-uniform quantization for speech signal (2) (APR/MAY 2008) (c) Write the principle of compander used for speech signal. (4) (APR/MAY 2008) (d) Calculate the bit rate of a delta modulator for a sampling rate of 40 ksamples/sec. (2) (APR/MAY 2008) (e) How does adaptive delta modulation alleviate the problems associated with delta modulation scheme? (4) (APR/MAY 2008) 17. Derive an expression for the processing gain of DPCM. (NOV/DEC2007) Department of Electronics and Communication Engineering 2

3 18. Draw the block diagram and explain in detail the process of PCM system. (10) (NOV/DEC 2008) 19. An analog voltage waveform with an absolute bandwidth of 100 Hz and an amplitude range of 10 V to +10 V is to be transmitted over a PCM system with 0.1% accuracy full scale. (a) Determine the minimum sampling rate needed.(4) (b) Determine the number of bits needed in each PCM word.(4) (c) Determine the minimum bit rate required in the PCM signal.(4) (d) Determine the minimum absolute channel bandwidth required for transmission of PCM signal. (4) 20. What is the need for companding in PCM? Draw the transfer characteristics of a companding system. (4) (MAY/JUNE 2009) Delta Modulation 21. Explain the principle of delta modulation. Also derive an expression for average output noise power. (8) MAY/JUN2006),(M/J 2009) 22. Explain in detail about delta modulation and the types of quantization errors with a neat block diagram. (12) (APR/MAY2005) 23. How does ADM elevate problems associated with DM? (NOV /DEC2007) 24. Explain the two types of quantization noise in delta modulation system.(8) (NOV /DEC2007) 25. Compare the principles of Delta Modulation with Adaptive Delta Modulation systems. (6) (NOV/DEC 2008) 26. What is meant by compander? Explain the two types of compression laws. (8) (APR/MAY2004) 27. Explain the frame format and signaling scheme used in T1 carrier system. (8) (APR/MAY2004) 28. What is meant by slope overload distortion in DM? Write the condition to be satisfied to avoid this distortion.(8) 29. (a) Explain in detail, the principle of Adaptive Delta Modulation. (10) (b) List out the advantages and limitations of PCM. (6) (N/D 2008) (M/J 2009) 30. (a) Explain in detail the concept of digital multiplexing and demultiplexing (8) (M/J 2009) (b) How is PCM influenced by noise sources? Explain in detail. (8) (M/J 2009) Department of Electronics and Communication Engineering 3

4 31. A PCM system uses a uniform quantizer followed by a 7 bit binary encoder. The bit rate of the system is equal to bits per second. (a) What is the maximum bandwidth for the system to operate satisfactorily? (b) Determine the output Signal to Noise Ratio when a full load sinusoidal modulating wave of frequency 1 MHz is applied. (8) 32. Explain the principle of delta modulation and derive the expression for thermal noise in delta modulation. (8) (NOV /DEC2007) UNIT-III BASEBAND COMMUNICATION Receiving Filter 1. Derive the expression for bit error probability of a matched filter. (16) (MAY 2011) 2. Explain the signal design techniques to compensate ISI illumination. (16) (MAY 2011) 3. What is meant by matched filter? Compare its functioning with a correlator. (10) (NOV 2010) 4. How can a matched filter maximize the SNR for a given transmitted symbol? Explain in detail (6) 5. What is meant by Inter Symbol Interference (ISI)? Explain in detail, the Nyquist criterion for minimizing ISI. Explain the difficulties in implementing it, in a practical system. (16) 6. (a) What is meant by ISI? Explain the cause for ISI and Nyquist criteria for distortionless transmission. (10) (MAY/JUNE 2009) (b) Explain the base band M-ary PAM transmission. (6) (MAY/JUNE 2009) Equalizing Filter 7. What does the term equalization refer to? Explain the methods to implement equalization using transversal filters.(10) (NOV 2010) 8. Sketch the time response and frequency response of signal with raised cosine pulse spectrum.(8) (APR/MAY2004) 9. What is meant by ideal Nyquist channel? What are its merits and limitations? (8) 10. Derive the equation for the impulse response coefficients of the zero forcing equalizer. (8) 11. Explain the application of adaptive equalizers for telephone channel. (4) 12. Draw and explain the block diagram of adaptive equalization (8) (NOV /DEC2007) Department of Electronics and Communication Engineering 4

5 13. Design a 3-tap equalizer to reduce ISI due to P r (t). (APR/MAY2008) Detectors 14. Why is precoding used with duo binary signaling scheme? Draw the block diagram of precoder and explain its operation. (8) (APR/MAY2004) 15. Draw the block diagram of an adaptive filter and explain the LMS algorithm. (10)(A/M2004) 16. How is eye pattern used to study the performance of a data transmission system? (6) (APR/MAY2004) 17. Draw the block diagram of the duo binary signaling scheme and derive the overall frequency response of this scheme.(16) (NOV/DEC2004, NOV /DEC2007) 18. Derive an expression for Nyquist criterion for distortionless base band transmission for zero Inter Symbol Interference. (6) (APR/MAY2005) 19. Explain the eye pattern and adaptive equalization for data transmission. (10) (APR/MAY2005, MAY/JUN2006) 20. List out the merits and demerits of duo binary signaling. (6) 21. The binary data ( ) are applied to the input of a duo binary encoder. Construct the duo binary encoder and the corresponding receiver output, without precoder. Due to error during transmission, the level produced by 3 rd digit is reduced to zero, construct the new receiver output. (10) (NOV/DEC2006) 22. Explain the following: (a) Adaptive equalization (b) Base band binary PAM system. (MAY/JUNE2007) 23. Compare base band binary PAM system with BFSK. (NOV /DEC2007) 24. Derive the expression for probability of error of a matched filter.(8) (NOV /DEC2007) 25. Explain correlative level coding and adaptive equalization of baseband transmission. (16) (NOV/DEC 2008) 26. (a) Explain duo binary encoding scheme and its error propagation. (10) (M/J 2009) (b)explain the two operating modes of adaptive equalizers (6) (MAY/JUNE 2009) 27. Explain the modified duo binary signaling scheme with neat sketches. (10) (MAY/JUNE 2009) Department of Electronics and Communication Engineering 5

6 28. Compare the power spectra of different binary formats. (6) (MAY/JUNE 2009) UNIT-IV BASEBAND SIGNAL TRANSMISSION AND RECEPTION Bandpass signal Transmission and Reception ASK, PSK, QPSK, MSK 1. Derive the bit error probability of coherent ASK, PSK and FSK systems. Compare their performances. ` (MAY 2011) 2. Explain in detail QPSK Signaling. (MAY 2011) 3. Derive bit error probability of QPSK receiver. Compare it with PSK receiver (MAY 2011) 4. Distinguish between coherent and non coherent scheme. (NOV 2010) 5. Explain non coherent detection method of BFSK Signaling. (NOV 2010) 6. Explain QPSK transmitter and coherent QPSK receiver with relevant diagram. (10) (APR/MAY2004,MAY/JUN2006, NOV/DEC2007) 7. Compare the performances of coherent PSK, coherent QPSK and coherent FSK.(6)(APR/MAY2004) 8. Draw the block diagram of MSK transmitter and explain the functions of each block. (8) 9. Explain the generations of MSK signal from CPSK signal. (8) 10. With necessary equations and signal space diagram, determine the probability of error for coherent binary FSK systems.(12) (APR/MAY2005) 11. Explain BPSK signal transmission and coherent BPSK reception with suitable diagrams. Derive an expression for the probability of symbol error.(16) 12. Explain in detail the FSK system with necessary equations and signal space diagram.(16) (MAY/JUN2006, NOV /DEC2007, APR/MAY2008) 13. Derive the probability of error in terms of E b /N 0 for QPSK.(8) (MAY/JUN2006, APR/MAY2008) 14. Draw the block diagram of MSK transmitter and explain the function of each block with the constellation diagram.(16) (MAY/JUNE,2007) 15. What are the advantages and disadvantages of MSK when compared with QPSK system? (6) 16. (a) Explain in detail carrier synchronization of QPSK signal.(6) (b) Explain the detection of binary FSK signal with block diagram. (7) (c) Explain binary PSK signal with geometrical representation. (3) (NOV /DEC2007) (NOV /DEC2007) 17. Draw the block diagrams of MSK transmitter and receiver and explain the functions of each block. Draw the constellation diagram. Derive the probability of error.(16) (NOV/DEC 2008) Department of Electronics and Communication Engineering 6

7 18. Distinguish between: (a) Coherent PSK and DPSK (4) (b) Coherent FSK and non-coherent FSK (4) (c) Coherent PSK and QPSK (4) (d) Coherent FSK and coherent MSK (4) (NOV/DEC 2008) 19. Explain the generation, detection, signal space diagram, bit error probability and power spectra of QPSK. (16) (MAY/JUNE 2009) 20. (a) Explain carrier and symbol synchronization. (10) (b) Compare the Digital modulation techniques in terms of bit error rate and bandwidth efficiency. (6) (MAY/JUNE 2009) 21. With necessary equations and signal space diagram, determine the probability of error for coherent binary PSK system. (16) (MAY/JUNE 2009) UNIT-V ERROR CONTROL CODING TECHNIQUES Convolutional Code 1. For a (2,1) convolution coder with constraint length 6, draw the tree diagram, state diagram and trellis diagram for the assumed coder. (MAY 2011) 2. Explain the encoding process of convolution codes with a suitable example. (16) (MAY2010) 3. Explain tree diagram, trellis diagram and state transition diagram of convolutional codes. (16) (A/M 2010) 4. (a)draw the block diagram of rate ½ convolutional encoder with constraint length 3. What is the generator polynomial of the encoder? Compute the encoded sequence you have drawn, corresponding to the message (10011). (12) (APR/MAY2004) (b) Draw the trellis diagram for the obtained encoded sequence. (4) (APR/MAY2005) 5. Draw the diagram of the ½ rate convolutional encoder for the generator polynomial g (1) (D) = 1+D and g (2) (D) = 1+D+D 2. Compute the encoder output for input sequence (10) 6. What is meant by free distance of a convolutional code? How does it affect the coding gain and the number of errors to be corrected? (6) 7. Explain in detail Viterbi-decoding algorithm.(12) (APR/MAY2005; MAY/JUN2005,(APR/MAY2008) 8. Consider a rate ½, non systematic convolutional code with, g (1) = {1,0,1} and g (2) ={1,1,1}. Department of Electronics and Communication Engineering 7

8 Determine the encoder output corresponding to the data sequence {1, 0, 1, 0, 1}. If the first and the fourth bit of the encoded sequence are affected during transmission, Explain the error correcting capability of the Viterbi algorithm. (16) 9. (a) For the (1/2) convolutional coder, draw the state and the trellis diagram for the input sequence (8) (b) What are cyclic codes? List out the merits and demerits of cyclic codes. (8) (MAY/JUNE 2009) 10. Explain the convolutional decoder algorithm for the encoder of constraint length 3 and code rate ½. (16) (NOV /DEC2007) Classification of Line codes 11. Derive the power spectra of polar codes and on-off codes, and explain their characteristics. (16) (MAY 2011) Linear Block Codes 12. Determine the (7, 4) linear systematic block code word corresponding to Assume a suitable generator matrix. (MAY 2011) 13. For (6, 3) systematic linear block code, the codeword comprises I1, I2, I3, P1, P2, P3 where the 3 parity bits P1, P2, P3 are formed from the information bits as follows: a) P1 = I1 + I2 b)p2 = I1 + I3 c)p3 = I2 + I3 Determine the parity check matrix, generator matrix, all possible code words, minimum weight, minimum distance, the error correcting and detecting capability of the code.(16) (MAY/JUNE 2010) 14. Write the generator matrix and parity check matrix of (7, 4) Hamming code. (8) (APR/MAY2004) 15. Explain in detail decoding procedure for linear block code. (6) (APR/MAY2004) 16. Determine the code words for (7, 4) Hamming code. (8) (MAY/JUN2006) 17. State and prove the properties of syndrome decoding. (6) (APR/MAY2005, MAY/JUN2006) 18. Explain in detail the features of RS code. (4) (APR/MAY2004) 19. Explain any four characteristics of the following block codes a) BCH codes b) CRC codes c) Maximum length codes. (12) 20. Determine the generator and parity check matrix for (5, 1) repetition code. (4) 21. Determine the syndromes for all five probable signal error patterns in (5, 1) repetition code. (6) (MAY/JUN2006) Department of Electronics and Communication Engineering 8

9 22. Prove that the minimum distance of a linear block code is equal to the minimum weight of any non-zero word in the code. (4) (APR/MAY2008) 23. (a) The parity check matrix of a particular (7, 4) linear block code is given by H = Calculate the generator matrix. (6) (b) Explain the coding and decoding procedure of a linear block codes. (10) (MAY/JUNE 2009) Cyclic code 24. With necessary polynomial of a (7, 4) cyclic code is g(x) = 1 + x + x 3. Determine the systematic code word for the message vector M = (8) 25. A (15, 5) linear cyclic code has a generator polynomial, g(d) = 1+D+D 2 +D 4 +D 5 +D 8 +D 10. Draw the block diagrams of an encoder and syndrome calculator for the given code. Find the code polynomial in the systematic form, for the message polynomial m(d) = 1+D 2 +D 4. Is y (D) = 1+D 4 +D 6 +D 8 +D 14, a code polynomial? If not, calculate the syndrome of y (D). (16) 26. Explain the implementation of cyclic encoder and decoder based on linear feedback shift registers.(16) Department of Electronics and Communication Engineering 9

QUESTION BANK. Staff In-Charge: M.MAHARAJA, AP / ECE

QUESTION BANK. Staff In-Charge: M.MAHARAJA, AP / ECE FATIMA MICHAEL COLLEGE OF ENGINEERING & TECHNOLOGY Senkottai Village, Madurai Sivagangai Main Road, Madurai -625 020 An ISO 9001:2008 Certified Institution QUESTION BANK Sub. Code : EC 2301 Class : III

More information

UNIT I Source Coding Systems

UNIT I Source Coding Systems SIDDHARTH GROUP OF INSTITUTIONS: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (DESCRIPTIVE) Subject with Code: DC (16EC421) Year & Sem: III-B. Tech & II-Sem Course & Branch: B. Tech

More information

QUESTION BANK EC 1351 DIGITAL COMMUNICATION YEAR / SEM : III / VI UNIT I- PULSE MODULATION PART-A (2 Marks) 1. What is the purpose of sample and hold

QUESTION BANK EC 1351 DIGITAL COMMUNICATION YEAR / SEM : III / VI UNIT I- PULSE MODULATION PART-A (2 Marks) 1. What is the purpose of sample and hold QUESTION BANK EC 1351 DIGITAL COMMUNICATION YEAR / SEM : III / VI UNIT I- PULSE MODULATION PART-A (2 Marks) 1. What is the purpose of sample and hold circuit 2. What is the difference between natural sampling

More information

DIGITAL COMMINICATIONS

DIGITAL COMMINICATIONS Code No: R346 R Set No: III B.Tech. I Semester Regular and Supplementary Examinations, December - 23 DIGITAL COMMINICATIONS (Electronics and Communication Engineering) Time: 3 Hours Max Marks: 75 Answer

More information

Syllabus. osmania university UNIT - I UNIT - II UNIT - III CHAPTER - 1 : INTRODUCTION TO DIGITAL COMMUNICATION CHAPTER - 3 : INFORMATION THEORY

Syllabus. osmania university UNIT - I UNIT - II UNIT - III CHAPTER - 1 : INTRODUCTION TO DIGITAL COMMUNICATION CHAPTER - 3 : INFORMATION THEORY i Syllabus osmania university UNIT - I CHAPTER - 1 : INTRODUCTION TO Elements of Digital Communication System, Comparison of Digital and Analog Communication Systems. CHAPTER - 2 : DIGITAL TRANSMISSION

More information

Sixth Semester B.E. Degree Examination, May/June 2010 Digital Communication Note: Answer any FIVEfull questions, selecting at least TWO questionsfrom each part. PART-A a. With a block diagram, explain

More information

QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61)

QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61) QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61) Module 1 1. Explain Digital communication system with a neat block diagram. 2. What are the differences between digital and analog communication systems?

More information

KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK. Subject Name: Digital Communication Techniques

KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK. Subject Name: Digital Communication Techniques KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK Subject Code: EC1351 Year/Sem: III/IV Subject Name: Digital Communication Techniques UNIT I PULSE MODULATION

More information

Downloaded from 1

Downloaded from  1 VII SEMESTER FINAL EXAMINATION-2004 Attempt ALL questions. Q. [1] How does Digital communication System differ from Analog systems? Draw functional block diagram of DCS and explain the significance of

More information

EC6501 Digital Communication

EC6501 Digital Communication EC6501 Digital Communication UNIT -1 DIGITAL COMMUNICATION SYSTEMS Digital Communication system 1) Write the advantages and disadvantages of digital communication. [A/M 11] The advantages of digital communication

More information

LATHA MATHAVAN ENGINEERING COLLEGE Alagarkovil, Madurai

LATHA MATHAVAN ENGINEERING COLLEGE Alagarkovil, Madurai UNIT I - SAMPLING & QUANTIZATION PART A 1. What is aliasing? (EC6501 June 2016) 2. What is Companding? Sketch the input-output characteristics of a compressor and an expander. (EC6501 June 2016) 3. An

More information

KINGS DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING DIGITAL COMMUNICATION TECHNIQUES YEAR/SEM: III / VI BRANCH : ECE PULSE MODULATION

KINGS DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING DIGITAL COMMUNICATION TECHNIQUES YEAR/SEM: III / VI BRANCH : ECE PULSE MODULATION KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING SUB.NAME : EC1351 DIGITAL COMMUNICATION TECHNIQUES BRANCH : ECE YEAR/SEM: III / VI UNIT I PULSE MODULATION PART A (2

More information

EXPERIMENT WISE VIVA QUESTIONS

EXPERIMENT WISE VIVA QUESTIONS EXPERIMENT WISE VIVA QUESTIONS Pulse Code Modulation: 1. Draw the block diagram of basic digital communication system. How it is different from analog communication system. 2. What are the advantages of

More information

DEPARTMENT OF COMPUTER GCE@Bodi_ SCIENCE GCE@Bodi_ AND ENIGNEERING GCE@Bodi_ GCE@Bodi_ GCE@Bodi_ Analog and Digital Communication GCE@Bodi_ DEPARTMENT OF CsE Subject Name: Analog and Digital Communication

More information

UNIT TEST I Digital Communication

UNIT TEST I Digital Communication Time: 1 Hour Class: T.E. I & II Max. Marks: 30 Q.1) (a) A compact disc (CD) records audio signals digitally by using PCM. Assume the audio signal B.W. to be 15 khz. (I) Find Nyquist rate. (II) If the Nyquist

More information

QUESTION BANK (VI SEM ECE) (DIGITAL COMMUNICATION)

QUESTION BANK (VI SEM ECE) (DIGITAL COMMUNICATION) QUESTION BANK (VI SEM ECE) (DIGITAL COMMUNICATION) UNIT-I: PCM & Delta modulation system Q.1 Explain the difference between cross talk & intersymbol interference. Q.2 What is Quantization error? How does

More information

Year : TYEJ Sub: Digital Communication (17535) Assignment No. 1. Introduction of Digital Communication. Question Exam Marks

Year : TYEJ Sub: Digital Communication (17535) Assignment No. 1. Introduction of Digital Communication. Question Exam Marks Assignment 1 Introduction of Digital Communication Sr. Question Exam Marks 1 Draw the block diagram of the basic digital communication system. State the function of each block in detail. W 2015 6 2 State

More information

Contents Preview and Introduction Waveform Encoding

Contents Preview and Introduction Waveform Encoding Contents 1 Preview and Introduction... 1 1.1 Process of Communication..... 1 1.2 General Definition of Signal..... 3 1.3 Time-Value Definition of Signals Analog and Digital..... 6 1.3.1 Continuous Time

More information

SCHEME OF COURSE WORK. Course Code : 13EC1114 L T P C : ELECTRONICS AND COMMUNICATION ENGINEERING

SCHEME OF COURSE WORK. Course Code : 13EC1114 L T P C : ELECTRONICS AND COMMUNICATION ENGINEERING SCHEME OF COURSE WORK Course Details: Course Title : DIGITAL COMMUNICATIONS Course Code : 13EC1114 L T P C 4 0 0 3 Program Specialization Semester Prerequisites Courses to which it is a prerequisite :

More information

AMSEC/ECE

AMSEC/ECE EC6501 -DIGITAL COMMUNICATION UNIT-I SAMPLING & QUANTIZATION 1. Define Dirac comb or ideal sampling function. What is its Fourier Transform? Dirac comb is nothing but a periodic impulse train in which

More information

INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad

INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad - 500 03 ELECTRONICS AND COMMUNICATION ENGINEERING TUTORIAL QUESTION BANK Name : DIGITAL COMMUNICATIONS Code : A6020 Class : III -

More information

VARDHAMAN COLLEGE OF ENGINEERING (AUTONOMOUS) Affiliated to JNTUH, Hyderabad ASSIGNMENT QUESTION BANK

VARDHAMAN COLLEGE OF ENGINEERING (AUTONOMOUS) Affiliated to JNTUH, Hyderabad ASSIGNMENT QUESTION BANK VARDHAMAN COLLEGE OF ENGINEERING (AUTONOMOUS) Affiliated to JNTUH, Hyderabad ASSIGNMENT QUESTION BANK Name of the subject: Digital Communications B.Tech/M.Tech/MCA/MBA Subject Code: A1424 Semester: VI

More information

EEE 309 Communication Theory

EEE 309 Communication Theory EEE 309 Communication Theory Semester: January 2017 Dr. Md. Farhad Hossain Associate Professor Department of EEE, BUET Email: mfarhadhossain@eee.buet.ac.bd Office: ECE 331, ECE Building Types of Modulation

More information

GOPALAN COLLEGE OF ENGINEERING AND MANAGEMENT Electronics and communication Department

GOPALAN COLLEGE OF ENGINEERING AND MANAGEMENT Electronics and communication Department Appendix - F GOPALAN COLLEGE OF ENGINEERING AND MANAGEMENT Electronics and Department Academic Year: 2016-17 Semester: EVEN 6. COURSE PLAN Semester: VI Subject Code: 10EC61 Name of Subject: Digital Communication

More information

TCET3202 Analog and digital Communications II

TCET3202 Analog and digital Communications II NEW YORK CITY COLLEGE OF TECHNOLOGY The City University of New York DEPARTMENT: SUBJECT CODE AND TITLE: COURSE DESCRIPTION: REQUIRED COURSE Electrical and Telecommunications Engineering Technology TCET3202

More information

28. What is meant by repetition rate of the AM envelope? (ADC,AU-2010) 29. Describe the upper and lower sidebands. (ADC, AU-2010) 30.

28. What is meant by repetition rate of the AM envelope? (ADC,AU-2010) 29. Describe the upper and lower sidebands. (ADC, AU-2010) 30. Institute of Road and Transport Technology, Erode Department of Electronics and Communication Engineering Class/Sem: 2 nd Year Information Technology-3rd Semester Subject: Principles of Communication (IT)

More information

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER Third Semester Computer Science and Engineering CS 2204 ANALOG AND DIGITAL COMMUNICATION

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER Third Semester Computer Science and Engineering CS 2204 ANALOG AND DIGITAL COMMUNICATION B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011. Third Semester Computer Science and Engineering CS 2204 ANALOG AND DIGITAL COMMUNICATION Time : Three hours Maximum : 100 marks Answer ALL questions.

More information

B. Tech. (SEM. VI) EXAMINATION, (2) All question early equal make. (3) In ease of numerical problems assume data wherever not provided.

B. Tech. (SEM. VI) EXAMINATION, (2) All question early equal make. (3) In ease of numerical problems assume data wherever not provided. " 11111111111111111111111111111111111111111111111111111111111111III *U-3091/8400* Printed Pages : 7 TEC - 601! I i B. Tech. (SEM. VI) EXAMINATION, 2007-08 DIGIT AL COMMUNICATION \ V Time: 3 Hours] [Total

More information

ELECTRONICS AND COMMUNICATION ENGINEERING

ELECTRONICS AND COMMUNICATION ENGINEERING INSTIT INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad -500 043 ELECTRONICS AND COMMUNICATION ENGINEERING COURSE DESCRIPTOR Course Title Course Code Programme DIGITAL COMMUNICATIONS

More information

PRINCIPLES OF COMMUNICATIONS

PRINCIPLES OF COMMUNICATIONS PRINCIPLES OF COMMUNICATIONS Systems, Modulation, and Noise SIXTH EDITION INTERNATIONAL STUDENT VERSION RODGER E. ZIEMER University of Colorado at Colorado Springs WILLIAM H. TRANTER Virginia Polytechnic

More information

Digital Modulation Schemes

Digital Modulation Schemes Digital Modulation Schemes 1. In binary data transmission DPSK is preferred to PSK because (a) a coherent carrier is not required to be generated at the receiver (b) for a given energy per bit, the probability

More information

Communication Systems

Communication Systems Electrical Engineering Communication Systems Comprehensive Theory with Solved Examples and Practice Questions Publications Publications MADE EASY Publications Corporate Office: 44-A/4, Kalu Sarai (Near

More information

EC 6501 DIGITAL COMMUNICATION UNIT - IV PART A

EC 6501 DIGITAL COMMUNICATION UNIT - IV PART A EC 6501 DIGITAL COMMUNICATION UNIT - IV PART A 1. Distinguish coherent vs non coherent digital modulation techniques. [N/D-16] a. Coherent detection: In this method the local carrier generated at the receiver

More information

INSTITUTE OF AERONAUTICAL ENGINEERING

INSTITUTE OF AERONAUTICAL ENGINEERING INSTITUTE OF AERONAUTICAL ENGINEERING (AUTONOMUS) Dundigal, Hyderabad - 00 0 ELECTRONICS AND COMMUNICATION ENGINEERING TUTORIAL QUESTION BANK Name : DIGITAL COMMUNICATIONS Code : AEC009 Class : B. Tech

More information

EEE 309 Communication Theory

EEE 309 Communication Theory EEE 309 Communication Theory Semester: January 2016 Dr. Md. Farhad Hossain Associate Professor Department of EEE, BUET Email: mfarhadhossain@eee.buet.ac.bd Office: ECE 331, ECE Building Part 05 Pulse Code

More information

EC 6501 DIGITAL COMMUNICATION UNIT - II PART A

EC 6501 DIGITAL COMMUNICATION UNIT - II PART A EC 6501 DIGITAL COMMUNICATION 1.What is the need of prediction filtering? UNIT - II PART A [N/D-16] Prediction filtering is used mostly in audio signal processing and speech processing for representing

More information

Communication Systems

Communication Systems Electronics Engineering Communication Systems Comprehensive Theory with Solved Examples and Practice Questions Publications Publications MADE EASY Publications Corporate Office: 44-A/4, Kalu Sarai (Near

More information

Fundamentals of Digital Communication

Fundamentals of Digital Communication Fundamentals of Digital Communication Network Infrastructures A.A. 2017/18 Digital communication system Analog Digital Input Signal Analog/ Digital Low Pass Filter Sampler Quantizer Source Encoder Channel

More information

QUESTION BANK. SUBJECT CODE / Name: EC2301 DIGITAL COMMUNICATION UNIT 2

QUESTION BANK. SUBJECT CODE / Name: EC2301 DIGITAL COMMUNICATION UNIT 2 QUESTION BANK DEPARTMENT: ECE SEMESTER: V SUBJECT CODE / Name: EC2301 DIGITAL COMMUNICATION UNIT 2 BASEBAND FORMATTING TECHNIQUES 1. Why prefilterring done before sampling [AUC NOV/DEC 2010] The signal

More information

UNIT III -- DATA AND PULSE COMMUNICATION PART-A 1. State the sampling theorem for band-limited signals of finite energy. If a finite energy signal g(t) contains no frequency higher than W Hz, it is completely

More information

DE63 DIGITAL COMMUNICATIONS DEC 2014

DE63 DIGITAL COMMUNICATIONS DEC 2014 Q.2 a. Draw the bandwidth efficiency curve w.r.t E b /N o. Compute the value of E b /N o required to achieve the data rate equal to the channel capacity if the channel bandwidth tends to infinity b. A

More information

Digital modulation techniques

Digital modulation techniques Outline Introduction Signal, random variable, random process and spectra Analog modulation Analog to digital conversion Digital transmission through baseband channels Signal space representation Optimal

More information

Problem Sheet 1 Probability, random processes, and noise

Problem Sheet 1 Probability, random processes, and noise Problem Sheet 1 Probability, random processes, and noise 1. If F X (x) is the distribution function of a random variable X and x 1 x 2, show that F X (x 1 ) F X (x 2 ). 2. Use the definition of the cumulative

More information

Understanding Digital Communication Principles.

Understanding Digital Communication Principles. s Understanding Digital Communication Principles Scientech TechBooks are compact and user friendly learning platforms to provide a modern, portable, comprehensive and practical way to learn Technology.

More information

11 Distinguish between low level and high level modulation. 12 What are the advantages of the super heterodyne receiver?

11 Distinguish between low level and high level modulation. 12 What are the advantages of the super heterodyne receiver? Course B.E-EEE(Marine) Batch 8 Semester V Subject Code Subject Name UAEE511 Communication Engineering Part-A Unit-1 1 Define Modulation. 2 Define Amplitude Modulation. 3 Define Modulation index. 4 What

More information

Level 6 Graduate Diploma in Engineering Communication systems

Level 6 Graduate Diploma in Engineering Communication systems 9210-118 Level 6 Graduate Diploma in Engineering Communication systems Sample Paper You should have the following for this examination one answer book non-programmable calculator pen, pencil, ruler, drawing

More information

a) Abasebanddigitalcommunicationsystemhasthetransmitterfilterg(t) thatisshowninthe figure, and a matched filter at the receiver.

a) Abasebanddigitalcommunicationsystemhasthetransmitterfilterg(t) thatisshowninthe figure, and a matched filter at the receiver. DIGITAL COMMUNICATIONS PART A (Time: 60 minutes. Points 4/0) Last Name(s):........................................................ First (Middle) Name:.................................................

More information

DIGITAL COMMUNICATIONS SYSTEMS. MSc in Electronic Technologies and Communications

DIGITAL COMMUNICATIONS SYSTEMS. MSc in Electronic Technologies and Communications DIGITAL COMMUNICATIONS SYSTEMS MSc in Electronic Technologies and Communications Bandpass binary signalling The common techniques of bandpass binary signalling are: - On-off keying (OOK), also known as

More information

COMMUNICATION SYSTEMS

COMMUNICATION SYSTEMS COMMUNICATION SYSTEMS 4TH EDITION Simon Hayhin McMaster University JOHN WILEY & SONS, INC. Ш.! [ BACKGROUND AND PREVIEW 1. The Communication Process 1 2. Primary Communication Resources 3 3. Sources of

More information

EC 2301 Digital communication Question bank

EC 2301 Digital communication Question bank EC 2301 Digital communication Question bank UNIT I Digital communication system 2 marks 1.Draw block diagram of digital communication system. Information source and input transducer formatter Source encoder

More information

END-OF-YEAR EXAMINATIONS ELEC321 Communication Systems (D2) Tuesday, 22 November 2005, 9:20 a.m. Three hours plus 10 minutes reading time.

END-OF-YEAR EXAMINATIONS ELEC321 Communication Systems (D2) Tuesday, 22 November 2005, 9:20 a.m. Three hours plus 10 minutes reading time. END-OF-YEAR EXAMINATIONS 2005 Unit: Day and Time: Time Allowed: ELEC321 Communication Systems (D2) Tuesday, 22 November 2005, 9:20 a.m. Three hours plus 10 minutes reading time. Total Number of Questions:

More information

DIGITAL COMMUNICATION

DIGITAL COMMUNICATION DIGITAL COMMUNICATION TRAINING LAB Digital communication has emerged to augment or replace the conventional analog systems, which had been used widely a few decades back. Digital communication has demonstrated

More information

Physical Layer: Modulation, FEC. Wireless Networks: Guevara Noubir. S2001, COM3525 Wireless Networks Lecture 3, 1

Physical Layer: Modulation, FEC. Wireless Networks: Guevara Noubir. S2001, COM3525 Wireless Networks Lecture 3, 1 Wireless Networks: Physical Layer: Modulation, FEC Guevara Noubir Noubir@ccsneuedu S, COM355 Wireless Networks Lecture 3, Lecture focus Modulation techniques Bit Error Rate Reducing the BER Forward Error

More information

PANIMALAR ENGINEERING COLLEGE

PANIMALAR ENGINEERING COLLEGE S.NO DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK FOR FIFTH SEMESTER(2017-2018) SUBJECT CODE SUBJECT NAME PAGE NO 1 EC6501 Digital Communication 1.1-1.39 2 EC6502 3 EC6503 4 EC6504

More information

Data Encoding g(p (part 2)

Data Encoding g(p (part 2) Data Encoding g(p (part 2) CSE 3213 Instructor: U.T. Nguyen 10/11/2007 12:44 PM 1 Analog Data, Digital Signals (5.3) 2 1 Analog Data, Digital Signals Digitization Conversion of analog data into digital

More information

ECE 4600 Communication Systems

ECE 4600 Communication Systems ECE 4600 Communication Systems Dr. Bradley J. Bazuin Associate Professor Department of Electrical and Computer Engineering College of Engineering and Applied Sciences Course Topics Course Introduction

More information

QUESTION BANK. Sandeep Kumar Bansal. Electronics & Communication Department

QUESTION BANK. Sandeep Kumar Bansal. Electronics & Communication Department QUESTION BANK Sandeep Kumar Bansal Electronics & Communication Department ANALOG AND DIGITAL COMMUNICATION QUESTION BANK BRANCH 4 TH SEM CS/IT UNIT-1 1. Draw the circuit diagram of balanced modulator using

More information

University of Swaziland Faculty of Science Department of Electrical and Electronic Engineering Main Examination 2016

University of Swaziland Faculty of Science Department of Electrical and Electronic Engineering Main Examination 2016 University of Swaziland Faculty of Science Department of Electrical and Electronic Engineering Main Examination 2016 Title of Paper Course Number Time Allowed Instructions Digital Communication Systems

More information

: DIGITAL COMMUNICATION

: DIGITAL COMMUNICATION SRM UNIVERSITY FACULTY OF ENGINEERING AND TECHNOLOGY DEPARTMENT OF ECE COURSE PLAN Course Code : EC0307 Course Title : DIGITAL COMMUNICATION Semester : V Course Time : JULY NOVEMBER 2012 Location : S.R.M.TECH

More information

Digital Communication (650533) CH 3 Pulse Modulation

Digital Communication (650533) CH 3 Pulse Modulation Philadelphia University/Faculty of Engineering Communication and Electronics Engineering Digital Communication (650533) CH 3 Pulse Modulation Instructor: Eng. Nada Khatib Website: http://www.philadelphia.edu.jo/academics/nkhatib/

More information

B SCITEQ. Transceiver and System Design for Digital Communications. Scott R. Bullock, P.E. Third Edition. SciTech Publishing, Inc.

B SCITEQ. Transceiver and System Design for Digital Communications. Scott R. Bullock, P.E. Third Edition. SciTech Publishing, Inc. Transceiver and System Design for Digital Communications Scott R. Bullock, P.E. Third Edition B SCITEQ PUBLISHtN^INC. SciTech Publishing, Inc. Raleigh, NC Contents Preface xvii About the Author xxiii Transceiver

More information

Thus there are three basic modulation techniques: 1) AMPLITUDE SHIFT KEYING 2) FREQUENCY SHIFT KEYING 3) PHASE SHIFT KEYING

Thus there are three basic modulation techniques: 1) AMPLITUDE SHIFT KEYING 2) FREQUENCY SHIFT KEYING 3) PHASE SHIFT KEYING CHAPTER 5 Syllabus 1) Digital modulation formats 2) Coherent binary modulation techniques 3) Coherent Quadrature modulation techniques 4) Non coherent binary modulation techniques. Digital modulation formats:

More information

DEPARTMENT OF CSE QUESTION BANK

DEPARTMENT OF CSE QUESTION BANK DEPARTMENT OF CSE QUESTION BANK SUBJECT CODE: CS6304 SUBJECT NAME: ANALOG AND DIGITAL COMMUNICATION Part-A UNIT-I ANALOG COMMUNICATION 1.Define modulation? Modulation is a process by which some characteristics

More information

DEPARTMENT OF INFORMATION TECHNOLOGY QUESTION BANK. Subject Name: Information Coding Techniques UNIT I INFORMATION ENTROPY FUNDAMENTALS

DEPARTMENT OF INFORMATION TECHNOLOGY QUESTION BANK. Subject Name: Information Coding Techniques UNIT I INFORMATION ENTROPY FUNDAMENTALS DEPARTMENT OF INFORMATION TECHNOLOGY QUESTION BANK Subject Name: Year /Sem: II / IV UNIT I INFORMATION ENTROPY FUNDAMENTALS PART A (2 MARKS) 1. What is uncertainty? 2. What is prefix coding? 3. State the

More information

EEE482F: Problem Set 1

EEE482F: Problem Set 1 EEE482F: Problem Set 1 1. A digital source emits 1.0 and 0.0V levels with a probability of 0.2 each, and +3.0 and +4.0V levels with a probability of 0.3 each. Evaluate the average information of the source.

More information

Introduction to Digital Communications System

Introduction to Digital Communications System Wireless Information Transmission System Lab. Introduction to Digital Communications System Institute of Communications Engineering National Sun Yat-sen University Recommended Books Digital Communications

More information

B.Tech II Year II Semester (R13) Supplementary Examinations May/June 2017 ANALOG COMMUNICATION SYSTEMS (Electronics and Communication Engineering)

B.Tech II Year II Semester (R13) Supplementary Examinations May/June 2017 ANALOG COMMUNICATION SYSTEMS (Electronics and Communication Engineering) Code: 13A04404 R13 B.Tech II Year II Semester (R13) Supplementary Examinations May/June 2017 ANALOG COMMUNICATION SYSTEMS (Electronics and Communication Engineering) Time: 3 hours Max. Marks: 70 PART A

More information

PULSE CODE MODULATION (PCM)

PULSE CODE MODULATION (PCM) PULSE CODE MODULATION (PCM) 1. PCM quantization Techniques 2. PCM Transmission Bandwidth 3. PCM Coding Techniques 4. PCM Integrated Circuits 5. Advantages of PCM 6. Delta Modulation 7. Adaptive Delta Modulation

More information

CHAPTER 2. Instructor: Mr. Abhijit Parmar Course: Mobile Computing and Wireless Communication ( )

CHAPTER 2. Instructor: Mr. Abhijit Parmar Course: Mobile Computing and Wireless Communication ( ) CHAPTER 2 Instructor: Mr. Abhijit Parmar Course: Mobile Computing and Wireless Communication (2170710) Syllabus Chapter-2.3 Modulation Techniques Reasons for Choosing Encoding Techniques Digital data,

More information

DHANALAKSHMI SRINIVASAN COLLEGE OF ENGINEERING AND TECHNOLOGY CS6304- ANALOG AND DIGITAL COMMUNICATION BE-CSE/IT SEMESTER III REGULATION 2013 Faculty

DHANALAKSHMI SRINIVASAN COLLEGE OF ENGINEERING AND TECHNOLOGY CS6304- ANALOG AND DIGITAL COMMUNICATION BE-CSE/IT SEMESTER III REGULATION 2013 Faculty DHANALAKSHMI SRINIVASAN COLLEGE OF ENGINEERING AND TECHNOLOGY CS6304- ANALOG AND DIGITAL COMMUNICATION BE-CSE/IT SEMESTER III REGULATION 2013 Faculty Name: S.Kalpana, AP/ECE QUESTION BANK UNIT I ANALOG

More information

CHAPTER 3 Syllabus (2006 scheme syllabus) Differential pulse code modulation DPCM transmitter

CHAPTER 3 Syllabus (2006 scheme syllabus) Differential pulse code modulation DPCM transmitter CHAPTER 3 Syllabus 1) DPCM 2) DM 3) Base band shaping for data tranmission 4) Discrete PAM signals 5) Power spectra of discrete PAM signal. 6) Applications (2006 scheme syllabus) Differential pulse code

More information

Analyze the spectral characteristics of band pass signaling schemes and their noise performance

Analyze the spectral characteristics of band pass signaling schemes and their noise performance Course Code: EC6501 Course Name: DIGITAL COMMUNICATIONL-3 : T-0 : P-0 : Credits 3 COURSE OBJECTIVES: 1. To know the principles of sampling & quantization 2. To study the various waveform coding schemes

More information

d[m] = [m]+ 1 2 [m 2]

d[m] = [m]+ 1 2 [m 2] DIGITAL COMMUNICATIONS PART A (Time: 60 minutes. Points 4/0) Last Name(s):........................................................ First (Middle) Name:.................................................

More information

Digital to Digital Encoding

Digital to Digital Encoding MODULATION AND ENCODING Data must be transformed into signals to send them from one place to another Conversion Schemes Digital-to-Digital Analog-to-Digital Digital-to-Analog Analog-to-Analog Digital to

More information

SNS COLLEGE OF ENGINEERING COIMBATORE DEPARTMENT OF INFORMATION TECHNOLOGY QUESTION BANK

SNS COLLEGE OF ENGINEERING COIMBATORE DEPARTMENT OF INFORMATION TECHNOLOGY QUESTION BANK SNS COLLEGE OF ENGINEERING COIMBATORE 641107 DEPARTMENT OF INFORMATION TECHNOLOGY QUESTION BANK EC6801 WIRELESS COMMUNICATION UNIT-I WIRELESS CHANNELS PART-A 1. What is propagation model? 2. What are the

More information

Class 4 ((Communication and Computer Networks))

Class 4 ((Communication and Computer Networks)) Class 4 ((Communication and Computer Networks)) Lesson 5... SIGNAL ENCODING TECHNIQUES Abstract Both analog and digital information can be encoded as either analog or digital signals. The particular encoding

More information

Waveform Encoding - PCM. BY: Dr.AHMED ALKHAYYAT. Chapter Two

Waveform Encoding - PCM. BY: Dr.AHMED ALKHAYYAT. Chapter Two Chapter Two Layout: 1. Introduction. 2. Pulse Code Modulation (PCM). 3. Differential Pulse Code Modulation (DPCM). 4. Delta modulation. 5. Adaptive delta modulation. 6. Sigma Delta Modulation (SDM). 7.

More information

UNIT I UNIT I Analog Communication. 3. Define Modulation index and percent modulation for an AM wave.

UNIT I UNIT I Analog Communication. 3. Define Modulation index and percent modulation for an AM wave. UNIT I UNIT I Analog Communication PART-A 1. What is modulation? Modulation is the process of changing any one parameter (amplitude, frequency or phase) of a relatively high frequency carrier signal in

More information

MODULATION AND MULTIPLE ACCESS TECHNIQUES

MODULATION AND MULTIPLE ACCESS TECHNIQUES 1 MODULATION AND MULTIPLE ACCESS TECHNIQUES Networks and Communication Department Dr. Marwah Ahmed Outlines 2 Introduction Digital Transmission Digital Modulation Digital Transmission of Analog Signal

More information

Voice Transmission --Basic Concepts--

Voice Transmission --Basic Concepts-- Voice Transmission --Basic Concepts-- Voice---is analog in character and moves in the form of waves. 3-important wave-characteristics: Amplitude Frequency Phase Telephone Handset (has 2-parts) 2 1. Transmitter

More information

Amplitude Frequency Phase

Amplitude Frequency Phase Chapter 4 (part 2) Digital Modulation Techniques Chapter 4 (part 2) Overview Digital Modulation techniques (part 2) Bandpass data transmission Amplitude Shift Keying (ASK) Phase Shift Keying (PSK) Frequency

More information

Columbia University. Principles of Communication Systems ELEN E3701. Spring Semester May Final Examination

Columbia University. Principles of Communication Systems ELEN E3701. Spring Semester May Final Examination 1 Columbia University Principles of Communication Systems ELEN E3701 Spring Semester- 2006 9 May 2006 Final Examination Length of Examination- 3 hours Answer All Questions Good Luck!!! I. Kalet 2 Problem

More information

Basic Concepts in Data Transmission

Basic Concepts in Data Transmission Basic Concepts in Data Transmission EE450: Introduction to Computer Networks Professor A. Zahid A.Zahid-EE450 1 Data and Signals Data is an entity that convey information Analog Continuous values within

More information

Time division multiplexing The block diagram for TDM is illustrated as shown in the figure

Time division multiplexing The block diagram for TDM is illustrated as shown in the figure CHAPTER 2 Syllabus: 1) Pulse amplitude modulation 2) TDM 3) Wave form coding techniques 4) PCM 5) Quantization noise and SNR 6) Robust quantization Pulse amplitude modulation In pulse amplitude modulation,

More information

APPLICATIONS OF DSP OBJECTIVES

APPLICATIONS OF DSP OBJECTIVES APPLICATIONS OF DSP OBJECTIVES This lecture will discuss the following: Introduce analog and digital waveform coding Introduce Pulse Coded Modulation Consider speech-coding principles Introduce the channel

More information

Signal Encoding Techniques

Signal Encoding Techniques 2 Techniques ITS323: to Data Communications CSS331: Fundamentals of Data Communications Sirindhorn International Institute of Technology Thammasat University Prepared by Steven Gordon on 3 August 2015

More information

Chapter 4. Part 2(a) Digital Modulation Techniques

Chapter 4. Part 2(a) Digital Modulation Techniques Chapter 4 Part 2(a) Digital Modulation Techniques Overview Digital Modulation techniques Bandpass data transmission Amplitude Shift Keying (ASK) Phase Shift Keying (PSK) Frequency Shift Keying (FSK) Quadrature

More information

AN INTRODUCTION OF ANALOG AND DIGITAL MODULATION TECHNIQUES IN COMMUNICATION SYSTEM

AN INTRODUCTION OF ANALOG AND DIGITAL MODULATION TECHNIQUES IN COMMUNICATION SYSTEM AN INTRODUCTION OF ANALOG AND DIGITAL MODULATION TECHNIQUES IN COMMUNICATION SYSTEM Rashmi Pandey Vedica Institute of Technology, Bhopal Department of Electronics & Communication rashmipandey07@rediffmail.com

More information

Digital Communication - Analog to Digital

Digital Communication - Analog to Digital Unit 26. Digital Communication Digital Communication - Analog to Digital The communication that occurs in our day-to-day life is in the form of signals. These signals, such as sound signals, generally,

More information

S.R.M. Institute of Science & Technology School of Electronics & Communication Engineering

S.R.M. Institute of Science & Technology School of Electronics & Communication Engineering S.R.M. Institute of Science & Technology School of Electronics & Communication Engineering QUESTION BANK Subject Code : EC314 Subject Name : Communication Engineering Year & Sem : III Year, 6th Sem (EEE)

More information

V. CHANDRA SEKAR Professor and Head Department of Electronics and Communication Engineering SASTRA University, Kumbakonam

V. CHANDRA SEKAR Professor and Head Department of Electronics and Communication Engineering SASTRA University, Kumbakonam V. CHANDRA SEKAR Professor and Head Department of Electronics and Communication Engineering SASTRA University, Kumbakonam 1 Contents Preface v 1. Introduction 1 1.1 What is Communication? 1 1.2 Modulation

More information

MAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI

MAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI MAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI 621213 QUESTION BANK DEPARTMENT: ECE SEMESTER: V SUBJECT CODE / Name: EC2301 DIGITAL COMMUNICATION UNIT-I DIGITAL COMMUNICATION SYSTEMS PART -A (2 Marks)

More information

CDMA Systems Engineering Handbook

CDMA Systems Engineering Handbook CDMA Systems Engineering Handbook Jhong Sam Lee Leonard E. Miller Artech House Boston London Table of Contents Preface xix CHAPTER 1: INTRODUCTION AND REVIEW OF SYSTEMS ANALYSIS BASICS 1 1.1 Introduction

More information

SEN366 Computer Networks

SEN366 Computer Networks SEN366 Computer Networks Prof. Dr. Hasan Hüseyin BALIK (5 th Week) 5. Signal Encoding Techniques 5.Outline An overview of the basic methods of encoding digital data into a digital signal An overview of

More information

UNIVERSITY OF SOUTHAMPTON

UNIVERSITY OF SOUTHAMPTON UNIVERSITY OF SOUTHAMPTON ELEC6014W1 SEMESTER II EXAMINATIONS 2007/08 RADIO COMMUNICATION NETWORKS AND SYSTEMS Duration: 120 mins Answer THREE questions out of FIVE. University approved calculators may

More information

Lecture 3 Concepts for the Data Communications and Computer Interconnection

Lecture 3 Concepts for the Data Communications and Computer Interconnection Lecture 3 Concepts for the Data Communications and Computer Interconnection Aim: overview of existing methods and techniques Terms used: -Data entities conveying meaning (of information) -Signals data

More information

Mobile & Wireless Networking. Lecture 2: Wireless Transmission (2/2)

Mobile & Wireless Networking. Lecture 2: Wireless Transmission (2/2) 192620010 Mobile & Wireless Networking Lecture 2: Wireless Transmission (2/2) [Schiller, Section 2.6 & 2.7] [Reader Part 1: OFDM: An architecture for the fourth generation] Geert Heijenk Outline of Lecture

More information

Outline. Communications Engineering 1

Outline. Communications Engineering 1 Outline Introduction Signal, random variable, random process and spectra Analog modulation Analog to digital conversion Digital transmission through baseband channels Signal space representation Optimal

More information

6. FUNDAMENTALS OF CHANNEL CODER

6. FUNDAMENTALS OF CHANNEL CODER 82 6. FUNDAMENTALS OF CHANNEL CODER 6.1 INTRODUCTION The digital information can be transmitted over the channel using different signaling schemes. The type of the signal scheme chosen mainly depends on

More information

BSc (Hons) Computer Science with Network Security. Examinations for Semester 1

BSc (Hons) Computer Science with Network Security. Examinations for Semester 1 BSc (Hons) Computer Science with Network Security Cohort: BCNS/15B/FT Examinations for 2015-2016 Semester 1 MODULE: DATA COMMUNICATIONS MODULE CODE: CAN1101C Duration: 2 Hours Instructions to Candidates:

More information