Himachal Pradesh Takniki Shiksha Board | 3rd
Principles of Communication Engineering
📚 Syllabus - PCE (Diploma Electronics & Communication Engineering 3rd)
1. Introduction (02hrs)
1.1 Need for modulation and demodulation in communication systems.
1.2 Basic scheme of a modern communication system.
2. Amplitude modulation (06 hrs)
2.1 Derivation of expression for an amplitude modulated wave. Carrier and side band
components. Modulation index. Spectrum and bandwidth of AM Wave. Relative
power distribution in carrier and side bands.
2.2 Elementary idea of DSB-SC, SSB-SC, ISB and VSB modulations, their comparison,
and areas of application.
3. Frequency modulation (06 hrs)
3.1 Expression for frequency modulated wave and its frequency spectrum (without
Proof and analysis of Bessel function) Modulation index, maximum frequency
deviation and deviation ratio, BW and FM signals, Carson’s rule.
3.2 Effect of noise an FM carrier. Noise triangle, Role of limiter, Need for pre-emphasis
and de-emphasis, capture effect.
3.3 Comparison of FM and AM in communication systems.
4. Phase modulation (02hrs)
Derivation of expression for phase modulated wave, modulation index, comparison
. with frequency modulation.
5. Principles of Modulators (8 hrs)
Working principles and typical application of:-
- Square Law Modulaton.
- Switching Modulator
- Collector modulator
- Balanced Modulator
6. Principles of FM Modulators (08 hrs)
Working principles and applications of reactance modulator, varactor diode .
. modulator, VCO and Armstrong phase modulator
7. Demodulation of AM Waves (08 hrs)
7.1 Principles of demodulation of AM wave using diode detector circuit; concept
of clipping and formula for RC time constant for minimum distortion (no
derivation)
7.2 Principle of demodulation of AM Wave using synchronous detection.
8. Demodulation of FM Waves (08 hrs)
8.1 Basic principles of FM detection using slope detector
8.2 Principle of working of the following FM demodulators:-
- Foster-Seeley discriminator
- Ratio detector
- Quadrature detector
- Phase locked Loop (PLL) FM demodulators
9. Pulse Modulation (16 hrs)
9.1 Statement of sampling theorem and elementary idea of sampling frequency for
pulse modulation.
9.2 Basic concepts of time division multiplexing (TDM) and frequency division
multiplexing (FDM).
9.3 Basic ideas about PAM, PPM, PWM.
9.4 Pulse code Modulation (PCM) Basic scheme of PCM system.
9.5 Pulse code Modulation (PCM) Basic scheme of PCM system. Quantization,
quantization error, commanding, block diagram of TDMPCM communication
system and function of each block. Advantages of PCM systems. Concepts of
differential PCM (DPCM).
9.6 Delta Modulation (DM), Basic principle of delta modulation system, advantages
of delta modulation system over PCM system. Limitations of delta modulation,
concept of adaptive delta modulation (ADM).
Can't find the paper you need?
We don't have a recent paper for pce yet. Upload it and earn credits — it'll be reviewed before publishing.
About This Question Paper Collection
Browse PCE 3rd question papers for Diploma Electronics & Communication Engineering students at Himachal Pradesh Takniki Shiksha Board. This page helps students review question patterns, prepare for exams, and understand how previous papers are structured.
Select a paper below to open year-wise question papers, solutions, or available answer content where listed on BRpaper.
How Students Can Use These Papers
Old question papers for Principles of Communication Engineering are a quick way to see how Himachal Pradesh Takniki Shiksha Board has structured exams in the past — useful for timing practice and identifying high-priority topics.
Treat them as a supplement, not a replacement, for the latest syllabus and official notices, and use them to build confidence before the actual exam.
FAQ
Frequently Asked Questions
Helpful answers about this subject, papers, and exam preparation.
01 Where can I find Principles of Communication Engineering previous year question papers for Diploma Electronics & Communication Engineering, 3rd semester?
This page lists Principles of Communication Engineering question papers uploaded for Himachal Pradesh Takniki Shiksha Board Diploma Electronics & Communication Engineering, 3rd semester, organized for subject-wise browsing where available.
02 Are these official Himachal Pradesh Takniki Shiksha Board question papers?
BRpaper is not the official website of Himachal Pradesh Takniki Shiksha Board. These papers are shared for reference and revision purposes only and are not official university material.
03 How can previous year Principles of Communication Engineering papers help in exam preparation?
Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.
04 What kind of topics does Principles of Communication Engineering usually cover?
The question papers here relate to the official Principles of Communication Engineering syllabus set by the university for this course and semester.
05 Does this page include a Principles of Communication Engineering previous year question paper or solved answers?
This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.
06 Can I find papers for other subjects in the same Diploma Electronics & Communication Engineering?
Yes, BRpaper organizes papers by university, course, stream, and semester, so you can browse other subjects within the same Himachal Pradesh Takniki Shiksha Board Diploma Electronics & Communication Engineering.
Important
Important Disclaimer
BRpaper is not the official website of Himachal Pradesh Takniki Shiksha Board or any institution. BRpaper organizes available question papers for student reference only. For official notices, date sheets, results, syllabus changes, and academic updates, students should visit the official university website.