A J Institute of Engineering & Technology

Mangalore - 575006

LAB MANUAL
MASTER COPY
Basic Signal Processing
BEC402

Prepared By:

Mr. Jithendra. N.K

DEPARTMENT OF
ELECTRONICS & COMMUNICATION
ENGINEERING

1
PRINCIPLES OF COMMUNICATION SYSTEMS BEC 402

Vision
To be recognized as a center of excellence in the area of Electronics and Communication
Engineering by nurturing young innovative minds into skillful and ethical professionals to
cater the industrial and societal needs.

Mission Statements

M1: To establish state-of-the art laboratories to facilitate research and innovation to upgrade
the knowledge and skills in healthcare sector and IoT.
M2: To provide industry interaction for training programs on latest technology.
M3: To provide ethical and value-based education by promoting activities addressing the
societal needs.

PEOs Description
PEO1 Exhibit a desire for lifelong learning through professional and societal
activities.
PEO2 Exhibit and apply their technical skills and knowledge in Electronics and
Communication Engineering for industry and societal needs
PEO3 Exhibit leadership qualities, professional skills, management skills and
ethics needed for successful career.

S.No. POs Description

1 Engineering Apply the knowledge of mathematics, science, engineering
knowledge fundamentals and an engineering specialization to the solution of
complex engineering problems.
2 Problem Analysis Identify, formulate, review research literature, and analyse
complex engineering problems reaching substantiated conclusions
using first principles of mathematics, natural science and
engineering sciences.
3 Design/development Design solutions for complex engineering problems and design
of solutions system components or processes that meet the specified needs with
appropriate consideration for the public health and safety, and the
cultural, societal and environmental considerations.
4 Conduct Use research based knowledge and research methods including
investigations of design of experiments, analysis and interpretation of data, and
complex problems synthesis of the information to provide valid conclusions.
5 Modern tool usage: create, select and apply appropriate techniques, resources and
modern engineering and IT tools including prediction and
modelling to complex engineering activities with an understanding
of the limitations
6 The engineer and Apply reasoning informed by the contextual knowledge to assess
society societal, health, safety, legal and cultural issues and the
consequent responsibilities relevant to the professional engineering

DEPARTMENT OF ECE, AJIET.

PRINCIPLES OF COMMUNICATION SYSTEMS BEC 402

S.No. POs Description

practice
7 Environment Understand the impact of the professional engineering solutions in
sustainability the societal and environmental contexts, and demonstrate the
knowledge of, and need for sustainable development.
8 Ethics Apply ethical principles and commit to professional ethics and
responsibilities and norms of the engineering practice.
9 Individual and team Function effectively as an individual and as a member or leader in
work diverse teams, and in multidisciplinary settings.
10 Communication communicate effectively on complex engineering activities with
the engineering community and with society at large, such as,
being able to comprehend and write effective reports and design
documentation, make effective presentations, and give and receive
clear instructions
11 Project management Demonstrate knowledge and understanding of the engineering and
and finance management principles and apply these to ones own work, as a
member and leader in a team, to manage projects and in
multidisciplinary environments.
12 Lifelong learning recognize the need for, and have the preparation and ability to
engage in independent and lifelong learning in the broader context
of technological change.

PSOs Description
PSO1 Embedded Systems: Ability to apply the fundamental knowledge of core
Electronics and Communication Engineering courses in the analysis,
design, development of integrated electronic systems and healthcare
devices.
PSO2 Communication Systems: Ability to apply the fundamental knowledge of
signal processing in the analysis, design, and development of
communication systems.
PSO3 Simulation: Ability to use modern electronic tools such as MATLAB,
Xilinx, Multisim etc, to design and analyze the complex electronics and
communication systems.

PRINCIPLES OF COMMUNICATION SYSTEMS

DEPARTMENT OF ECE, AJIET.

PRINCIPLES OF COMMUNICATION SYSTEMS BEC 402

Semester 4 Course Code BEC402 CIE Marks 50

Teaching Hours/Week (L:T:P: S) 3:0:2:0 SEE Marks 50
Total Hours of Pedagogy 40 hours Theory + 8-10 Lab slots Total Marks 100
Credits 04 Exam Hours 03
Examination nature (SEE) Theory/practical/Viva-Voce /Term-work/Others

Course objectives:

This course will enable students to

• Understand and analyse concepts of Analog Modulation schemes viz; AM, FM

• Design and analyse the electronic circuits for AM and FM modulation and demodulation.

• Understand the concepts of random variable and random process to model communication systems.

• Understand and analyse the concepts of digitization of signals.

• Evolve the concept of SNR in the presence of channel induced noise

Teaching-Learning Process (General Instructions)

These are sample Strategies, which teacher can use to accelerate the attainment of the various course

outcomes.

1. Lecture method (L) does not mean only traditional lecture method, but different type of teaching methods

may be adopted to develop the outcomes.

2. Show Video/animation films to explain evolution of communication technologies.

3. Encourage collaborative (Group) Learning in the class.

4. Ask at least three HOTS (Higher order Thinking) questions in the class, which promotes critical thinking.

DEPARTMENT OF ECE, AJIET.

PRINCIPLES OF COMMUNICATION SYSTEMS BEC 402

5. Adopt Problem Based Learning (PBL), which fosters students’ Analytical skills, develop thinking skills
such

as the ability to evaluate, generalize, and analyze information rather than simply recall it.

6. Show the different ways to solve the same problem and encourage the students to come up with their own

creative ways to solve them.

7. Discuss how every concept can be applied to the real world - and when that's possible, it helps improve
the

students' understanding.

Course outcomes (Course Skill Set):

At the end of the course, the student will be able to:
1. Understand the principles of analog communication systems and noise modelling.
2. Identify the schemes for analog modulation and demodulation and compare their performance.
3. Design of PCM systems through the processes sampling, quantization and encoding.
4. Describe the ideal condition, practical considerations of the signal representation for baseband
transmission of
digital signals.
5. Identify and associate the random variables and random process in Communication system design.

DO’S:-

1. Maintain silence and discipline.

2. Before entering, leave the footwear outside the lab.

3. Proper dress code has to be maintained while entering in the Lab.

4. Students should carry lab observation book and record book completed in all aspects.

5. Read and understand logic of the program thoroughly before coming to the laboratory.

6. Enter in the login register before switching on the computers.

7. Use duly filled component issue slips, entering details such as batch names, Component specifications for
obtaining components from lab store

8. Students should be at their concerned table; unnecessary movement is restricted.

DEPARTMENT OF ECE, AJIET.

PRINCIPLES OF COMMUNICATION SYSTEMS BEC 402

9. Students should maintain same computer until end of the semester.

10. Report any problems in computers/hardware kits to the faculty member/laboratory technician
immediately.

11. Note down the experimental results legibly in the Observation book and get the same verified & signed
by the Faculty.

12. After completing the experiments, students should return the hardware kits, switch off the computers,
enter logout time and arrange chairs neatly.

DON’Ts:-

1. Do not come late to the Lab.

2. Don’t enter the lab without valid ID card.

3. Do not leave the lab without the permission of the Faculty In-Charge.

4. Never eat, drink while working in the laboratory.

5. Do not handle any equipment before reading the Instructions/Instruction manuals.

6. Do not exchange the computers & hardware kits with others.

7. Do not misbehave in the laboratory.

8. Do not alter computer settings/software settings and pen drives should not be connected to computers
without permission. Doing so will attract fines.

9. Do not remove anything from the kits/experimental set up without permission.

10. Do not leave the lab without verification of hardware kits by lab instructor

DEPARTMENT OF ECE, AJIET.

PRINCIPLES OF COMMUNICATION SYSTEMS BEC 402

LIST OF EXPERIMENTS

Page No:

Sl.No Experiments

1 Basic Signals and Signal Graphing: a) unit Step, b) Rectangular, c) standard triangle d) sinusoidal and
e) Exponential signal.

2 Illustration of signal representation in time and frequency domains for a rectangular pulse.

3 Amplitude Modulation and demodulation: Generation and display the relevant signals and its
spectrums.

4 Frequency Modulation and demodulation: Generation and display the relevant signals and its spectrums.

5 Sampling and reconstruction of low pass signals. Display the signals and its spectrum.

6 Time Division Multiplexing and demultiplexing.

7 PCM Illustration: Sampling, Quantization and Encoding

8 Generate a)NRZ, RZ and Raised cosine pulse, b) Generate and plot eye diagram

9 Generate the Probability density function of Gaussian distribution function.

10 Display the signal and its spectrum of an audio signal.

DEPARTMENT OF ECE, AJIET.

PRINCIPLES OF COMMUNICATION SYSTEMS BEC 402

DEPARTMENT OF ECE, AJIET.

PRINCIPLES OF COMMUNICATION SYSTEMS BEC 402

DEPARTMENT OF ECE, AJIET.