Project Description

Course Overview

This short online course explains modulation and demodulation without complex mathematics. It includes an overview of a simple digital communications transceiver. Review quizzes are included throughout the course to test knowledge and understanding.

What you will learn
  • Understand the elements of a basic wireless communications system

  • Know how the modulation process works
  • Know how the demodulation process works

  • Know the basics of a digital communications receiver

Technical Level

Intermediate

Time to Complete

Approx. 2 hr 15 mins

Course ID

RF400

Course Curriculum

11 modules – 46 video lessons – 111 mins total
– video lesson   – quiz   – book

1.1 Course Overview  

2.1 It’s a Digital World  
2.2 The Communications Model  
2.3 What Is Modulation Exactly?  
2.4 Modulation  
2.5 Demodulation  
2.6 Digital Communications Transceiver  
2.7 Module Quiz  

3.1 Digital Modulation Principles  
3.2 Digital Representation (Ones and Zeros)  
3.3 The Sampling Process  
3.4 How Fast Do I Sample?  
3.5 How Many Bits Do I Need?  
3.6 Simple Communications Example  
3.7 The Bit Error Rate (BER) Function  
3.8 Forward Error Correction (FEC)  
3.9 Module Quiz  

4.1 Ones and Zeros are Square Waves Aren’t They?  
4.2 Pulse Shaping – Bandwidth and Intersymbol Interference (ISI)  
4.3 Simple Pulse Filtering Example  
4.4 Raised Cosine Example  
4.5 Module Quiz  

15.1 Bits and Symbols  
15.2 Signal Vector Representation  
15.3 Making a Modulated Carrier  
15.4 Carrier Signal Changes – Representation in the IQ Plane  
15.5 Constellation and Eye Diagrams  
15.6 Signal and Noise Power  
15.7 Shannon’s Capacity Formula  
15.8 Module Quiz  

6.1 Linear Modulation Schemes  
6.2 M-ary PSK  
6.3 QPSK and OQPSK  
6.4 8-PSK and π/4-QPSK  
6.5 EDGE Modulation  
6.6 M-ary QAM  
6.7 16, 32 and 64-QAM  
6.8 Module Quiz  

7.1 Non-Linear Modulation Schemes  
7.2 Frequency Shift Keying (FSK)  
7.3 Minimum Shift Keying (MSK)  
7.4 Module Quiz  

8.1 Introduction to OFDM  
8.2 OFDM Concept  
8.3 OFDM Transmitter Signal Generation  
8.4 802.11a Modulator Block Diagram  
8.5 Module Quiz  

9.1 Spread Spectrum  
9.2 CDMA – How It Works  
9.3 Chip Rate and Spreading Factor  
9.4 CDMA – How It Works (Continued)  
9.5 Module Quiz  

10.1 Multiple Access Techniques  
10.2 Uplink and Downlink Separation  
10.3 Module Quiz  

11.1 Recommended Reading  

Includes 1-year unlimited individual access to all course content

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