• Students shall understand about the principle of modulating/demodulating with amplitude modulation, frequency modulation, phase modulation.
• Students shall understand the impact and limitation of different parameters on AM,FM and PM signals.
• Using demo developed with MATLAB GUI make it easy to adjust parameters and to display different stages of signals in both time domain and frequency domain

• Bachelor degree, Electrical engineering students.
• Lab with a group of not more than 2 students per working group.
• 2-3 hours with discussion
• No need for technical skills and experience with MATLAB as the software is developed with GUI.
• This activity is an addition activity to lecture courses, e.g. Principle of Communications, Intro to Communication Engineering.

Students may choose different parameters and discuss.

×

Showing that different modulation techniques can be chosen

Provenance: Thanawat Thaisiriphet, Faculty Of Engineering , Chiang Mai University
Reuse: This item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license http://creativecommons.org/licenses/by-nc-sa/3.0/ You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license.

×

Showing a good selection of modulation index for AM

Provenance: Thanawat Thaisiriphet, Faculty Of Engineering , Chiang Mai University
Reuse: This item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license http://creativecommons.org/licenses/by-nc-sa/3.0/ You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license.

×

Showing a bad selection of modulation index for AM

Provenance: Thanawat Thaisiriphet, Faculty Of Engineering , Chiang Mai University
Reuse: This item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license http://creativecommons.org/licenses/by-nc-sa/3.0/ You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license.

×

Showing FM modulation/demodulation

Provenance: Thanawat Thaisiriphet, Faculty Of Engineering , Chiang Mai University
Reuse: This item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license http://creativecommons.org/licenses/by-nc-sa/3.0/ You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license.

Let the student adjust the parameters, compare the message signal and demodulated signal. Let the student fins the correlation between the transmitted signal for the 'good scenario' and 'bad scenario'

Assessment is done via discussion and let students show different scenarios via the given tools.