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dc.contributor.advisorĐorđević, Goran T.
dc.contributor.otherNikolić, Zorica
dc.contributor.otherPerić, Zoran
dc.contributor.otherPanić, Stefan
dc.contributor.otherPetrović, Mile
dc.creatorStefanović, Časlav M.
dc.date.accessioned2017-07-24T08:20:17Z
dc.date.available2017-07-24T08:20:17Z
dc.date.available2020-07-03T16:02:14Z
dc.date.issued2017-05-19
dc.identifier.urihttp://nardus.mpn.gov.rs/handle/123456789/8427
dc.identifier.urihttp://eteze.ni.ac.rs/application/showtheses?thesesId=5123
dc.identifier.urihttps://fedorani.ni.ac.rs/fedora/get/o:1369/bdef:Content/download
dc.identifier.urihttp://vbs.rs/scripts/cobiss?command=DISPLAY&base=70052&RID=533894038
dc.description.abstractIn doctoral dissertation, first and second order system performances of wireless communication system in the presence of fading and interference are considered. Theoretically, four cases are taken into consideration, and obtained numerical results are graphically presented and analyzed. Firstly, wireless mobile communication system with the receiver that contains automatic frequency control (AFC) loop operating over fading channel in the presence of single interference is considered. Performance measures, such as average switching rate (ASR) and mean time lose of lock (MTTL), are defined. In this doctoral dissertation, ASR and MTTL, for three different fading channels: Kg, α-μ and k-μ are obtained. In the next chapter, wireless relay communication system with two sections in the presence of multipath fading is considered. Signal envelope at the input of the receiver can be expressed as product of the first section signal envelope and the second section signal envelope. For such system model, average level crossing rate (LCR) for the case when radio relay system of the first section operates over Nakagami-m fading environment and second section operates over k-μ fading environment is obtained. Wireless relay system with two sections in the presence of non-linear α-μ fading channel is than taken into consideration. Moreover, radio relay system with two sections in the presence of multipath fading and interference is also considered. LCR of the ratio of the product of two k-μ random processes and k-μ random process is calculated. Finally, LCR of the ratio of Rician random process and product of two Rician random processes is obtained. Wireless communication system with two inputs SSC diversity receiver operating over correlated multipath η-μ fading in the presence of interference is than considered. Joint probability density function and joint distribution cumulative function of the ratios of signal to interference at inputs of SSC receivers are calculated. By using obtained expressions for probability density function (PDF), average bit error probability (ABER) for different coherent and non-coherent modulation schemes is obtained while by using derived cumulative distribution function (CDF), outage probability (OP) is obtained. At the end of doctoral dissertation, macrodiversity system with macrodiversity SSC receiver and two microdiversity SC receivers operating over Gamma shadowed multipath fading channel is proposed. In one case Nakagami-m multipath fading channel is considered while in the second case k-μ multipath fading is considered. System performances of the proposed system are derived and numerical results are graphically presented and discusseden
dc.formatapplication/pdf
dc.languagesr
dc.publisherУниверзитет у Нишу, Електронски факултетsr
dc.rightsopenAccessen
dc.sourceУниверзитет у Нишуsr
dc.subjectbežične telekomunikacijesr
dc.subjectautomatic frequency control loopen
dc.subjectdiverziti tehnikesr
dc.subjectefekat senkesr
dc.subjectfedingsr
dc.subjectinterferencijasr
dc.subjectkolo za automatsku kontrolu učestanostisr
dc.subjectmakrodiverziti sistemsr
dc.subjectselekciono kombinovanjesr
dc.subjectsrednji broj osnih presekasr
dc.subjectstatističke karakteristike prvog i drugog redasr
dc.subjectverovatnoća otkazasr
dc.subjectdiversity systemsen
dc.subjectfadingen
dc.subjectfirst and second order statistical characteristicsen
dc.subjectlevel crossing rateen
dc.subjectinterferenceen
dc.subjectshadowingen
dc.subjectoutage probabilityen
dc.subjectwireless telecommunicationsen
dc.titleStatističke karakteristike prvog i drugog reda signala u bežičnom telekomunikacionom sistemu sa selekcionim kombinovanjemsr
dc.typedoctoralThesis
dc.rights.licenseBY
dcterms.abstractЂорђевић, Горан Т.; Николић, Зорица; Перић, Зоран; Панић, Стефан; Петровић, Миле; Стефановић, Часлав М.; Статистичке карактеристике првог и другог реда сигнала у бежичном телекомуникационом систему са селекционим комбиновањем; Статистичке карактеристике првог и другог реда сигнала у бежичном телекомуникационом систему са селекционим комбиновањем;
dc.identifier.fulltexthttp://nardus.mpn.gov.rs/bitstream/id/52193/Stefanovic_Caslav.pdf
dc.identifier.fulltexthttp://nardus.mpn.gov.rs/bitstream/id/52192/Disertacija.pdf


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