o:1805 Performanse telekomunikacionog radio sistema sa makro kombinovanjem pri prostiranju u uslovima urbane Sredine Performance of telecomunication radio systems with macro combining in urban propagation environments : doctoral dissertation sr Fundamental problems in wireless mobile telecommunication systems in urban environments are fast and slow fading, and interchannel interference. These problems significantly limit channel capacity and spectral efficiency of transmission. In this dissertation, macrodiversity reception of signals will be considered, aimed at reducing the negative influence of fast and slow fading. Performance of macrodiversity system will be considered when KG fading is present at the inputs of two-branch receiver, i.e. when the receiver is subjected to simultaneous influence of fast and slow fading effects, and interchannel interference. Interference envelope is also considered to be KG distributed, as expected for the considered urban environments. The dissertation will first determine probability density function of the ratio of two KG random variables, and then also the probability density functionof the ratio of signal and interference at the output of SC receiver. Also, cumulative probability, characteristic function and outage probability for the receiver with SC diversity technique in the presence of Nakagami-m and slow Gamma fading and interchannel interference will be determined. Bibliografija: listovi 140-146. Datum odbrane: 04.02.2022. Relay communication systems 91552100 59851017 91552101 8537 2022-11-25T15:57:26.053Z 45 no 46 Srđan, 1969- Maričić 16276327 2021 63 mentor Nenad, 1973- Milošević 6500455 2021 63 predsednik komisije Dejan Milić 2021 63 član komisije Dejan Drajić 2021 63 član komisije Danijel Đošić 2021 63 član komisije Aleksandra Panajotović 2021 146 listova 6008122 http://phaidrani.ni.ac.rs/o:1805 no yes 12 2022-11-25T15:57:26.320Z 70 Modeli fedinga, tehnike prenosa signala AF i DF, diverziti tehnike kombinovanja, modulacioni formati QPSK i BPSK Fading models, AF and DF signal transfer techniques, diversity combining techniques, QPSK and BPSK modulation formats 621.396.946+621.395.38(043.3) T180 1738 18A03 18A0309 2021