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Author:Haile, Beneyam Berehanu
Title:Co-channel interference in heterogeneous networks: Rician/Rayleigh scenario
Publication type:Master's thesis
Publication year:2010
Pages:xii + 68      Language:   eng
Department/School:Tietoliikenne- ja tietoverkkotekniikan laitos
Main subject:Tietoliikennetekniikka   (S-72)
Supervisor:Hämäläinen, Jyri
Instructor:Riihonen, Taneli
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201203131447
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto  720   | Archive
Keywords:probability distributions
channel modeling
co-channel interference
Rayleigh fading
Rician fading
Nakagami fading
Weibull fading
lognormal fading
outage probability
outage capacity
average capacity
heterogeneous networks
Abstract (eng): The purpose of this study is to analyze interference for a macro cellular network h which embeds femtocells and/or relay nodes.
Femtocells and relay nodes are being introduced to improve coverage and capacity of conventional cellular networks.
However, their introduction comes with additional interference between the uacrocell and femtocell/relay node, and between individual femtocells/relay nodes.
Hence, there is a need for analytical expressions for the performance measures such that outage probability and average capacity so that the effect of co-channe1 interference is understood thoroughly.
In this thesis, analytical and numerical results are presented for outage probability and average capacity in a Rician/Rayleigh Scenario.
In this scenario, the desired signal experiences Rician fading channel and the interfering signals experience Rayleigh fading channels.

Closed-form and infinite series expressions are found for the outage probability and an infinite sum expression is found for the average capacity.
The analysis approximates SINR by its tight upper bound SIR; therefore, the outage probability result is a tight lower bound and the average capacity result is a tight upper bound of their corresponding results without the approximation.
Moreover, the thesis, as a background work, includes detailed studies of the relevant probability distributions used to model fading channels and radio link performance metrics in the absence of interference.
ED:2010-07-15
INSSI record number: 39969
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