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Iroegbu, C.
Department of Electrical and Electronics Engineering, Michael Okpara University Of Agriculture, Umudike Abia State, Nigeria.
Nnochiri, I.
Department of Computer Engineering, Michael Okpara university of Agriculture Umudike Abia State, Nigeria.
ABSTRACT
In
this study, the focus is on the reduction of channel attenuation through
diversity techniques. The effectiveness of the diversity system was evaluated
based on its ability to lower the carrier noise ratio (CNR) and
carrier-to-interference ratio (CIR) at a specific probability of error (Pe).
The analysis concentrated on statistically reducing the fading dynamic range of
the average CNR and CIR. The aim was to examine two branches (N=2) of diversity
systems that employed pre-detection combining, a highly advantageous and
effective method in radio mobile communications. The initial phase of the
research involved investigating the statistical properties of CNR and CIR
without diversity using a Rayleigh fading model. Diversity was then introduced
into the experiment. Maximal ratio (MRC) combining, Equal gain (EGC) combining
and Selection (SC) combining were simulated and compared. The results showed
that the use of diversity techniques significantly reduced the fading dynamic
range of the instantaneous CNR γ compared to the instantaneous CIR λ of about
10-3dB Furthermore, maximal-ratio combining (MRC) demonstrated the highest
level of performance improvement compared to other methods.
Keywords: Maximal Ratio Combining (MRC), Equal Gain Combining (EGC) and Selection Combining (SC), Interference Ratio (CIR), Channel, Attenuation
https://doi.org/10.33922/j.ujet_v10i2_1
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Published
Wednesday, August 21, 2024
Issue
Vol. 10 No. 2, December 2024
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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