This course, Exploring communications technology, looks at some of the principles underpinning communications technology.
0
50
April 20, 2022
English
English [CC]
Description
It looks at the properties of signals and media (such as optical fibre and radio waves), error control, data compression, and the principles of 4G mobile communications, wi-fi and DSL broadband.
Course learning outcomes
After studying this course, you should be able to:
- Demonstrate an understanding of the principles of, and reasons for, carrier-wave modulation, and its application to Quadrature Amplitude Modulation
- Demonstrate an understanding of the roles of error detection and error correction, and be able to perform calculations involving checkeck digits and coding rates
- Demonstrate an understanding of the basic techniques of perceptual coding and the reasons for their use
- Demonstrate an understanding of how the use of multiple OFDM subchannels enables efficient use of communications channels in mobile communications, broadband and wifi.
Course Curriculum
- Introduction 00:10:00
- Learning outcomes 00:10:00
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- Signals and modulation 00:10:00
- Periodic signals 00:20:00
- Non-periodic signals 00:10:00
- Digital signals and modulation 00:15:00
- Amplitude-shift keying (ASK) 00:25:00
- Frequency-shift keying (FSK) 00:10:00
- Phase-shift keying (PSK) 00:20:00
- Quadrature amplitude modulation (QAM) 00:20:00
- Bandwidth 00:15:00
- Summary 00:10:00
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- Error control 00:25:00
- EAN-13 code and error detection 00:45:00
- Reed-Solomon codes and error correction 00:20:00
- Reed-Solomon codes and error correction continued 00:30:00
- Summary 00:07:00
- Introduction 00:15:00
- Sampling and quantisation 00:15:00
- Quantisation 00:20:00
- Perceptual encoding 00:15:00
- MPEG audio layer 3 (MP3) 00:20:00
- MP3 continued 01:00:00
- MPEG-4 AAC (advanced audio coding) 00:30:00
- Image and video compression 00:10:00
- Summary 00:10:00
About the instructor
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