Persistent Link:
http://hdl.handle.net/10150/577419
Title:
Real-Time CMA Equalization for SOQPSK for Aeronautical Telemetry
Author:
Cole-Rhodes, Arlene; Umuolo, Henry; Moazzami, Farzad; Rice, Michael
Affiliation:
Morgan State University; Brigham Young University
Issue Date:
2014-10
Rights:
Copyright © held by the author; distribution rights International Foundation for Telemetering
Collection Information:
Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
Publisher:
International Foundation for Telemetering
Journal:
International Telemetering Conference Proceedings
Abstract:
This paper presents the results of using the constant modulus algorithm (CMA) to recover a shaped offset quadrature-phase shift keying (SOQPSK)-TG modulated signal, which has been transmitted over an aeronautical telemetry channel using the iNET data packet structure. The iNET-packet structure contains known data bits (the preamble and asynchronous marker (ASM) bits) within each data packet, which can be used to determine the minimum mean square error (MMSE) equalizer and is then used as an initializer for the CMA algorithm. A baseline analysis of the performance of the MMSE-initialized CMA equalizer has been previously done using average bit error rates (BER). In order to achieve realtime processing, in this implementation the CMA equalizer weights are updated using a new data packet for each adaptation of the equalizer during which the bit error analysis is being done. Two implementations of the block processing CMA are compared. The first achieves convergence of the equalizer in the startup phase by processing a single fixed packet and the second achieves convergence by processing the multiple packets of received data. Performance evaluation results based on bit error rates, are presented for these two methods and they are compared to a previously determined baseline performance. We note that with the proper choice of parameters these real-time methods can achieve the baseline performance.
Sponsors:
International Foundation for Telemetering
ISSN:
0884-5123; 0074-9079
Additional Links:
http://www.telemetry.org/

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleReal-Time CMA Equalization for SOQPSK for Aeronautical Telemetryen_US
dc.contributor.authorCole-Rhodes, Arleneen
dc.contributor.authorUmuolo, Henryen
dc.contributor.authorMoazzami, Farzaden
dc.contributor.authorRice, Michaelen
dc.contributor.departmentMorgan State Universityen
dc.contributor.departmentBrigham Young Universityen
dc.date.issued2014-10en
dc.rightsCopyright © held by the author; distribution rights International Foundation for Telemeteringen_US
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.en_US
dc.publisherInternational Foundation for Telemeteringen
dc.description.abstractThis paper presents the results of using the constant modulus algorithm (CMA) to recover a shaped offset quadrature-phase shift keying (SOQPSK)-TG modulated signal, which has been transmitted over an aeronautical telemetry channel using the iNET data packet structure. The iNET-packet structure contains known data bits (the preamble and asynchronous marker (ASM) bits) within each data packet, which can be used to determine the minimum mean square error (MMSE) equalizer and is then used as an initializer for the CMA algorithm. A baseline analysis of the performance of the MMSE-initialized CMA equalizer has been previously done using average bit error rates (BER). In order to achieve realtime processing, in this implementation the CMA equalizer weights are updated using a new data packet for each adaptation of the equalizer during which the bit error analysis is being done. Two implementations of the block processing CMA are compared. The first achieves convergence of the equalizer in the startup phase by processing a single fixed packet and the second achieves convergence by processing the multiple packets of received data. Performance evaluation results based on bit error rates, are presented for these two methods and they are compared to a previously determined baseline performance. We note that with the proper choice of parameters these real-time methods can achieve the baseline performance.en
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123en
dc.identifier.issn0074-9079en
dc.identifier.urihttp://hdl.handle.net/10150/577419en
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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