Performanse i informacioni kapacitet mobilnih telekomunikacionih sistema sa tehnikom diverzita u različitim propagacionim okruženjima
Докторанд
Đošić, Danijel B.Ментор
Milić, DejanЧланови комисије
Perić, ZoranNikolić, Zorica
Milović, Daniela
Milovanović, Gradimir
Метаподаци
Приказ свих података о дисертацијиСажетак
In this doctoral dissertation, the diversity techniques are considered in
order to reduce the influence of fading on the system performances in
different propagation environments.
The second chapter considers the selective combining (SC) and the
maximal ratio combining (MRC) with two and three inputs. SC and
MRC receivers with two inputs are considered when Nakagami-m
fading is at the first input while α-μ fading is at the second input.
Then, an SC receiver with three inputs is considered when Nakagamim,
Rice and Rayleigh fading are presented. As a special case, SC and
MRC receivers with three inputs with Rice, Nakagami-m and α-μ
fading are considered. The SC performance of the two-input receivers
is considered in the case of the Nakagami-m fading and Nakagami-m
interference at one input, while at the second input are the Rice fading
and Rice interference, as well as the case when a desired Rice signal
and Nakagami-m interference are presented. For these models the
proba...bility density function (PDF), cumulative density function
(CDF), moments, level crossing rate (LCR) and the information
capacity of the channel at the output from the SC and MRC receivers
are calculated, the numerical results are graphically presented and
confirmed by simulations.
In the third chapter, the significant contribution of the doctoral
dissertation is the formation of the broken Nakagami-m distribution
and the analysis of the broken Nakagami-m fading. An SC receiver
with two and three inputs with broken Nakagami-m fading is
examined. The dissertation also examines the case of the SC two-way
receivers where there is a broken Rice/Nakagami-m fading. For such
cases, expressions for PDF, CDF and LCR are derived.
In the fourth chapter, the macrodiversity system is analyzed. The
macrodiversity SC receiver with two micro-diversity SC receivers,
when α-μ fading is present at the inputs and the correlated Gamma
shadowing, as well as the case when Rayleigh, Nakagami-m fading
and the correlated Gamma shadowing are at the inputs are examined.
The case of macrodiversity SC receivers with three microdiversity SC
receivers is further considered when Rice, Nakagami-m, κ-μ fading
and correlated Gamma shadowing are presented at inputs. For these
models, the PDF, CDF, LCR and the information capacity of the
channels at the macro-diversity SC receiver output are calculated and
numerical results are graphically presented.