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dc.contributor.authorKarakuş, Oktay-
dc.contributor.authorAltınkaya, Mustafa Aziz-
dc.contributor.authorKılıçaslan, Kağan-
dc.description21st Signal Processing and Communications Applications Conference (SIU)en_US
dc.description.abstractIn the new generation communication systems Multiple-Input-Multiple-Output systems are frequently used. The processing load of the Maximum Likelihood (ML) Detector which is the optimum detector for these systems, increases exponentially as a function of system dimension and memory due to testing all possible points. Sphere Decoding (SD) method which tests only the probable points, decreases the processing load dramatically. System memory changes by system dimensions and length of the convolutional encoder. This, in turn, affects the radius of the hyper sphere centered at the observation in the observation space at which SD attains the performance of the ML detector. This effect is investigated via simulation studies. In these simulations, it is observed that the radius of the SD is relatively smaller than the one in ML, and the ratio between the radius values varies from 6,61 in the case of memoryless 2x2 MIMO system to 1,02 in the case of 8x8 MIMO system with memory K=10 according to increased antenna numbers and system memory. In addition to these, it is observed that the radius of the hyper sphere is directly proportional to the memory of the encoder.en_US
dc.publisherInstitute of Electrical and Electronics Engineers Inc.en_US
dc.relation.ispartof2013 21st Signal Processing and Communications Applications Conference, SIU 2013en_US
dc.relation.ispartofseriesSignal Processing and Communications Applications Conference-
dc.subjectMultiple-Input-Multiple-Output systemsen_US
dc.subjectMaximum Likelihooden_US
dc.subjectSphere Decodingen_US
dc.subjectConvolutional Encoderen_US
dc.titleThe effect of convolutional encoder memory on the sphere decoding search radius in MIMO systemsen_US
dc.typeConference Objecten_US
dc.institutionauthorKarakuş, Oktay-
dc.institutionauthorAltınkaya, Mustafa Aziz-
dc.institutionauthorKılıçaslan, Kağan-
dc.departmentİzmir Institute of Technology. Electrical and Electronics Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
item.fulltextNo Fulltext-
item.openairetypeConference Object-
item.openairecristype Department of Electrical and Electronics Engineering-
Appears in Collections:WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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