Application of Optimization Techniques to Spectrally Modulated, Spectrally Encoded Waveform Design

Todd William Beard

ISBN 10: 1288313519 / ISBN 13: 9781288313518

Published by BiblioBazaar, LLC, US, 2012

About this Item

Seller Inventory # LU-9781288313518

Bibliographic Details

• Title: Application of Optimization Techniques to Spectrally Modulated, Spectrally Encoded Waveform Design
• Publisher: BiblioBazaar, LLC, US
• Publication Date: 2012
• Language: English
• ISBN 10: 1288313519
• ISBN 13: 9781288313518
• Binding: Paperback
• Condition: New
• Weight: 159 grams

About this title

Synopsis

A design process is demonstrated for a coexistent scenario containing Spectrally Modulated, Spectrally Encoded (SMSE) and Direct Sequence Spread Spectrum (DSSS) signals. Coexistent SMSE-DSSS designs are addressed under both perfect and imperfect DSSS code tracking conditions using a noncoherent delay-lock loop (DLL). Under both conditions, the number of SMSE subcarriers and subcarrier spacing are the optimization variables of interest. For perfect DLL code tracking conditions, the GA and RSM optimization processes are considered independently with the objective function being endto- end DSSS bit error rate. A hybrid GA-RSM optimization process is used under more realistic imperfect DLL code tracking conditions. In this case, optimization is accomplished using a correlation degradation metric with the GA process being first applied to generate a "coarse" solution followed by RSM processing which provides the final optimized solution. This work has successfully expanded the practical utility of a previously developed tool, the original SMSE framework, by demonstrating a more efficient, structured means for coexistent waveform design that replaces previous trial and error methods.

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