Back to Top Page

Professor Santiago (a.k.a. Dr J) talks about Educational Communications (Educomm) System  and his in-class or laboratory demonstrations.    (16:40 minutes)  Given on Nov 10, 1994.          

 

Back to Top Page

 

 

Professor Santiago developed the Educomm System during his tour at the United States Air Force Academy (1984-89) to provide a systems perspective on communications.  This presentation was recorded during his visit to the USAF Academy in 1994 and he was able to get one Educomm back to his home base at Eglin Air Force Base when he was station there from 1991-96.   He used the Educomm to demonstrate to his people that the key communications concepts can be applied to laser radar technology (or ladar -- the mother of all acronyms).    Professor Santiago visit to the Academy was to remind folks why he developed Educomm and show the numerous ways how important communications concepts can be demonstrated.  The idea of Educomm came from Dr Wickert of the University of Colorado, Colorado Springs in a  campus to share ideas.  Professor Santiago was with two Academy instructors and long time friends from the EE Department.

 

Back to Top Page

Basic Communications Block Diagram

Back to Top Page

 

 

Back to Top Page

Signals and Systems in the Time and Frequency Domain, 7:18 minutes (2:58 -  just music no explanation, 4:20- explanation)

Back to Top Page

 
Back to Top Page

Overview of Educomm, 11:03  (Explanation of Signals, Systems, and their interaction with each other)

Back to Top Page

1.  Explain how signals are described in the time and frequency domain.  Analyze signals in the time and frequency domain. Perform above explanation and analysis for periodic, nonperiodic, continuous-time and discrete-time signals.

2.  Explain systems in the time and frequency domain.  Analyze systems in the time and frequency domain.  Perform analysis for continuous-time and discrete-time signals.

3.  Explain the interaction between signals and systems in the time and frequency domain.  Analyze the interaction between signals and systems.  Explain the concepts of AM modulation:  DSB-SC, DSB-LC, SSB-SC, SSB-LC.

4.  Explain phase modulation, angle modulation, and frequency modulation.

5. Explain Sampling

6.  Explain the effects of noise on a communications system.  Analyze the effects of noise on a communications system.

Back to Top Page

Overview of Educomm, 1:34 (Video of interaction between signals and systems)

Back to Top Page

 

 

Explain the interaction of signals in both the time and frequency domain.

Back to Top Page

Overview of Educomm, 2:07  (Explanation of Superheterodyne receiver)

Back to Top Page

Explain the operation of the Superherodyne Receiver.
Back to Top Page

Overview of Educomm, 2:07  (Explanation of Sampling and Frequency Division Multiplexing - FDM)

Back to Top Page

Explain and analyze the operation Sampling and Frequency Division Multiplexing  (also in terms of DSB-LC AM and DSB-SC AM)