Communications 1

Course Content

Course Outline

INTRODUCTION TO ELECTRONIC COMMUNICATIONS SYSTEMS

1. Introduction
2. The Electromagnetic Spectrum
3. Bandwidth and Information Capacity
4. Transmission Modes
5. Circuit Arrangements
6. Signal Analysis
7. Mixing

DECIBELS and NOISE

1. Signal Magnitudes and Ranges
2. dB Calculation Examples
3. dB Reference Values
4. System Measurements with dB
5. dB and Bandwidth
6. External noise
7. Atmospheric Noise
8. Extraterrestrial Noise
9. Industrial Noise
10. Internal Noise
11. Thermal Agitation Noise
12. Shot Noise
13. Transit-time Noise
14. Miscellaneous Noise
15. Noise Calculations
16. Addition of Noise due to Several Sources
17. Addition of Noise due to several amplifiers in cascade
18. Noise in Reactive Circuits
19. Noise Figure
20. Signal-to-Noise Ration
21. Definition of Noise Figure
22. Calculation of Noise Figure
23. Noise Figure from Equivalent Noise resistance
24. Noise Temperature

AMPLITUDE MODULATION

1. AM Theory
2. Frequency Spectrum of AM wave
3. Representation of AM
4. Power Relations in AM wave
5. Generation of AM
6. Basic Requirements--Comparison of levels
7. Grid-modulated class C amplifier
8. Plate-modulated class C amplifier
9. Modulated Transistor Amplifier
10. Amplitude Modulation Transmission

SINGLE-SIDEBAND COMMUNICATIONS SYSTEMS

1. Evolution and Description of SSB
2. Suppression of Carrier
3. Suppression of Unwanted Sideband
4. Extensions of SSB
5. Forms of Amplitude Modulation
6. Carrier Insertion--Pilot-Carrier systems
7. Independent-sideband (ISB) systems
8. Vestigial Sideband Transmission

FREQUENCY MODULATION

1. Description of Systems
2. Mathematical Representation of FM
3. Frequency Spectrum of the FM wave
4. Phase Modulation
5. Intersystem Comparisons
6. Effects of Noise on carrier--noise triangle
7. Pre-emphasis and de-emphasis
8. Other forms of interference
9. Comparison of wideband and narrowband FM
10. FM methods
11. Direct methods
12. Indirect Method

MULTIPLEXING

Download a Powerpoint presentation on Multiplexing

1. Introduction
2. Time-Division Multiplexing
3. T1 Digital Carrier System
4. CCITT Time Division Multiplexed Carrier System
5. Codec
6. Combo Chips
7. NA Digital Hierarchy
8. Line Encoding
9. T Carriers
10. Frame Synchronization
11. Bit Interleaving vs Word Interleaving
12. Frequency-Division Multiplexing
13. AT & T's FDM Hierarchy
14. Composite Baseband Sugnal
15. Formation of a Mastergroup
16. Hybrid Data

PULSE MODULATION

1. Introduction
2. Frequency-Shift Keying (FSK)
3. On-Off Keying (OOK)
4. Amplitude-Shift Keying (ASK
5. Phase-Shift Keying(PSK)
6. Quadrature-AMplitude Modulation

PHASED-LOCK LOOP

1. Introduction

Prerequisite:

PROBABILITY AND STATISTICS

REFERENCES:

• Electronic Communications Systems Fundamentals by Wayne Tomasi
• Communications Electronics by Frenzel
• Electronic Communications Systems by William Schweber
• Electronic Communications by Robert Shrader
• Electronic Communication Systems by Kennedy
• Telecommunications Transmission Handbook by Freeman

Last updated: Saturday, March 1, 2008, 04:33 PM