Orthogonal frequency coding for SAW device applications

This paper presents the concept of orthogonal frequency coding (OFC) for applications to SAW device technology. OFC is the use of orthogonal frequencies to encode a signal. which spreads the signal bandwidth in a manner similar to a fixed M-ary frequency shift signal. Also, a pseudo noise (PN) seque...

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Bibliographic Details
Published inIEEE Ultrasonics Symposium, 2004 Vol. 2; pp. 1082 - 1085 Vol.2
Main Authors Malocha, D.C., Puccio, D., Gallagher, D.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2004
Subjects
Application software
Bandwidth
Contracts
Equations
Frequency domain analysis
Frequency response
Microsensors
NASA
Sampling methods
Surface acoustic wave devices
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Summary:This paper presents the concept of orthogonal frequency coding (OFC) for applications to SAW device technology. OFC is the use of orthogonal frequencies to encode a signal. which spreads the signal bandwidth in a manner similar to a fixed M-ary frequency shift signal. Also, a pseudo noise (PN) sequence can be added for additional coding. The OFC technique provides a wide bandwidth spread spectrum signal with all the inherent advantages obtained from the time-bandwidth product increase over the data bandwidth. The theory of OFC is presented and discussed, defining the fundamental equations and showing the time and frequency domain relationships. The application of OFC to SAW devices for tagging is introduced.
ISBN:9780780384125
0780384121
ISSN:1051-0117
DOI:10.1109/ULTSYM.2004.1417965