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dc.contributor.advisorKragh, Frank E.
dc.contributor.advisorLoomis, Herschel H.
dc.contributor.authorCowan, Frank R.
dc.date.accessioned2012-03-14T17:42:21Z
dc.date.available2012-03-14T17:42:21Z
dc.date.issued2009-09
dc.identifier.urihttp://hdl.handle.net/10945/4577
dc.descriptionApproved for public release, distribution unlimiteden_US
dc.description.abstractConventional approaches for a distributed low probability of detection communications system with a large number of unique transmitters and a single or a few receivers, require receiver complexity proportional to the number of transmitters. To improve efficiency in terms of receiver complexity, two alternative designs are analyzed and compared to a reference receiver, whose complexity grows linearly as the number of transmitters increases. The first alternative system groups the transmitters into clusters whose pseudorandom noise codes have some chips in common. The resulting receiver would then perform two stages of processes: identification of the transmitting cluster and received bit detection. The total number of processes required for any given transmitter would be substantially less than the traditional receiver. The second alternative design would utilize a common long spreading code and a shorter cyclically shifted spreading code in each transmitter. The receiver utilizes the cyclic shift property of the fast Fourier transform to recover efficiently both the identity of active receivers and the data sent using a single branch. The complexity of the two proposed systems is compared to that of the reference system.en_US
dc.format.extentxviii, 63 p. : ill. (some col.) ;en_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.subject.lcshSignal detectionen_US
dc.subject.lcshReceiversen_US
dc.subject.lcshTelecommunication systemsen_US
dc.subject.lcshFourier transformationsen_US
dc.titleDesign of scalable receivers for low probability of detection communications systemsen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.description.serviceUS Navy (USN) author.en_US
dc.identifier.oclc464224500
etd.thesisdegree.nameM.S.en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineElectrical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US


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