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A Hardware Approach To Teaching Fsk

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Collection

2007 Annual Conference & Exposition

Location

Honolulu, Hawaii

Publication Date

June 24, 2007

Start Date

June 24, 2007

End Date

June 27, 2007

ISSN

2153-5965

Conference Session

Special Session on Fixed-Point Education

Tagged Division

Computers in Education

Page Count

10

Page Numbers

12.45.1 - 12.45.10

Permanent URL

https://peer.asee.org/2240

Download Count

124

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Paper Authors

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Cameron Wright University of Wyoming Orcid 16x16 orcid.org/0000-0002-6029-1896

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Cameron H. G. Wright, Ph.D, P.E., is with the Department of Electrical and Computer Engineering at the University of Wyoming, Laramie, WY. His research interests include signal and image processing, real-time embedded computer systems, biomedical instrumentation, and wireless/satellite communications systems. He is a member of ASEE, IEEE, SPIE, NSPE, Tau Beta Pi, and Eta Kappa Nu. E-mail: c.h.g.wright@ieee.org

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Thad Welch Boise State University

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Thad B. Welch, Ph.D, P.E., recently joined the Department of Electrical and Computer Engineering at Boise State University where he is a Professor and Chair of the Department. Dr. Welch's research interests include the implementation of communication systems using DSP-based techniques, DSP education, and RF signal propagation. He is a member of ASEE, IEEE, Tau Beta Pi, and Eta Kappa Nu. E-mail: t.b.welch@ieee.org

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Michael Morrow University of Wisconsin-Madison

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Michael G. Morrow, MEngEE, P.E., is a Faculty Associate in the Department of Electrical and Computer Engineering at the University of Wisconsin, Madison, WI. His research interests include real-time digital systems, embedded system design, software engineering, curriculum design, and educational assessment techniques. He is a member of ASEE and IEEE. E-mail: morrow@ieee.org

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Gerald Vineyard U.S. Naval Academy

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Gerald Vineyard is a Midshipman 2.C (third year student) in the Department of Electrical Engineering at the United States Naval Academy in Annapolis, Maryland. Midn Vineyard's academic interest include real-time DSP, power electronic system design, and pulsed power sources for electromagnetic launching systems. E-mail: geraldvineyard@yahoo.com

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Abstract
NOTE: The first page of text has been automatically extracted and included below in lieu of an abstract

A Hardware Approach to Teaching FSK

Abstract

Many communication concepts are difficult for undergraduate students to internalize, but demonstrations and laboratory experiences are quite helpful. This paper describes how we teach the concept of frequency shift keying by using a highly successful combination of theory, demonstrations, lab exercises, and real-time DSP experiences that incorporate M ATLAB and the Texas Instruments C67x digital signal processing starter kit.

1 Introduction

While many communication concepts are difficult for undergraduate students to fully understand, the use of demonstrations and laboratory experiences have been shown to greatly facilitate the learning process.1–7 This paper describes how to teach the digital communication modulation tech- nique of frequency shift keying (FSK) using a highly successful combination of theory, demon- strations, lab exercises, and real-time DSP experiences that incorporate M ATLAB and the Texas Instruments (TI) C67x digital signal processing starter kit (DSK). This approach, when combined with the appropriate test and measurement equipment, provides a superior method of reinforcing communications theory and many of the associated practical, real-world tradeoffs that students often overlook.

Specifically, this paper describes the addition of a frequency shift-keying (FSK) capability to the winDSK6 program.6 FSK is one of the most straight-forward forms of digital communication. Once students understand FSK it is far easier to help them understand more complicated methods of digital modulation.8–10 This FSK capability is incorporated in a new winDSK6 module, called CommFSK, which includes the following features:

• generation of phase continuous and phase discontinuous FSK with adjustable data rate; • control of the modulated signal’s amplitude, center frequency, and frequency deviation; • source data selection from a pattern of alternating 0’s and 1’s, several PN-sequences, random data, all 0’s, all 1’s, ASCII text messages from keyboard, or data from files; • optional built-in or user-defined asynchronous communications protocol; • user defined FIR-based filtering of the resulting FSK signal; and, • full integration into the winDSK6 program.

ASEE holds the copyright on this document. It may be read by the public free of charge. Authors may archive their work on personal websites or in institutional repositories with the following citation: © 2007 American Society for Engineering Education. Other scholars may excerpt or quote from these materials with the same citation. When excerpting or quoting from Conference Proceedings, authors should, in addition to noting the ASEE copyright, list all the original authors and their institutions and name the host city of the conference. - Last updated April 1, 2015