STOCHASTIC ANALYSIS OF OUTAGE PROBABILITY OF THE CASCADED RAYLEIGH-RICIAN FADING CHANNEL USING PADÉ APPROXIMATION METHOD

Francis AWEDA; Isaac Adewale OJEDOKUN

doi:10.4314/njt.v43i2.2

Authors

F. O. Aweda Department of Physics, Bowen University, Iwo, Nigeria
I. A. Ojedokun Department of Electrical and Electronics Engineering, Bowen University, Iwo, Nigeria.

DOI:

https://doi.org/10.4314/njt.v43i2.2

Keywords:

PDF, CDF, Outage Probability, Pad, Moment Generating Function

Abstract

The dominance of wireless communication (WC) is evident in all areas of life such as Information and Communication Technology (ICT), research, business, academia, etc. However, modelling analysis of WC has been a serious challenge when it involves diversity combining. Previous work has attempted to solve this problem using approximation techniques. These approximation techniques seem to be complex and may be difficult to interpret. The existing practice of using the Probability Density Function (PDF) to analyse multipath fading in a diversity-rich environment is ineffective to handle cascaded fading channels. The current work proposed the Padẻ Approximation (PA) technique to mitigate the problem. The PA was developed from the generated Moment Generating Function (MGF) by truncating the Taylor series to obtain a rational expression. The approximated rational expressions obtained were transformed into PDF, Cumulative Density Function (CDF) and Outage Probability (). The results show that the reduces as the threshold value increases. The numerical results also shows that the diversity techniques is effective in combating fading because as the number of paths increases, the reduces. The reduces by 17.56% at L=4 from 90.83% at L=1 when there is no diversity. PA is a useful approximation to analyse the behavior of cascaded Rayleigh-Rician channel.

Author Biographies

F. O. Aweda, Department of Physics, Bowen University, Iwo, Nigeria

Physics Programme, College of Agriculture Engineering and Science, Bowen University, Iwo, Nigeria.
I. A. Ojedokun, Department of Electrical and Electronics Engineering, Bowen University, Iwo, Nigeria.

Electrical and Electronic Engineering Programme, College of Agriculture, Engineering and Sciences, Bowen University, Iwo, Nigeria/Senior Lecturer

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