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A New Hybrid Diversity Combining Scheme for Mobile Radio Communication Systems Over Nakagami Fading Chanel


Affiliations
1 Department of Electrical and Electronic Engineering, Federal University of Technology Owerri, Imo State, Nigeria
 

Diversity combining is a technique in wireless network that uses multiple antenna system to improve the quality of radio signal. Mobile radio system suffers multipath propagation due to signal obstruction in the channel. A new hybridized diversity combining scheme consisting of Equal Gain Combining (EGC) and Maximal Ratio Combining (MRC) was proposed in this paper. Theperformance of the hybrid model was evaluated using Outage Probability (Pout) and Processing time (Pt) at different Signal-to-Noise Ratio (SNR) and Signal Paths (L=2,3) for 4-QAM and 8-QAM Modulation Schemes. A mathematical expression for the hybrid EGC-MRC was realized using the Probability Density Function (PDF) of the Nakagami fading channel. MATLAB R2015b software was used for the model simulation. The result shows that hybrid EGC-MRC outperforms the standalone EGC and MRC schemes by having lower Pout and Pt values. Hence, hybrid EGC-MRC exhibits enhanced potentials to mitigate multipath propagation at reduced system complexity.

Keywords

Equal Gain Combining (EGC), Nakagami, Outage Probability, Processing Time, Multipath, Hybrid.
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  • A New Hybrid Diversity Combining Scheme for Mobile Radio Communication Systems Over Nakagami Fading Chanel

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Authors

Akinyinka Olukunle
Department of Electrical and Electronic Engineering, Federal University of Technology Owerri, Imo State, Nigeria
Onyebuchi Chikezie Nosiri
Department of Electrical and Electronic Engineering, Federal University of Technology Owerri, Imo State, Nigeria
Nnaemeka Chiemezie Onuekwusi
Department of Electrical and Electronic Engineering, Federal University of Technology Owerri, Imo State, Nigeria
Emmanuel Uchenna Ekwueme
Department of Electrical and Electronic Engineering, Federal University of Technology Owerri, Imo State, Nigeria

Abstract


Diversity combining is a technique in wireless network that uses multiple antenna system to improve the quality of radio signal. Mobile radio system suffers multipath propagation due to signal obstruction in the channel. A new hybridized diversity combining scheme consisting of Equal Gain Combining (EGC) and Maximal Ratio Combining (MRC) was proposed in this paper. Theperformance of the hybrid model was evaluated using Outage Probability (Pout) and Processing time (Pt) at different Signal-to-Noise Ratio (SNR) and Signal Paths (L=2,3) for 4-QAM and 8-QAM Modulation Schemes. A mathematical expression for the hybrid EGC-MRC was realized using the Probability Density Function (PDF) of the Nakagami fading channel. MATLAB R2015b software was used for the model simulation. The result shows that hybrid EGC-MRC outperforms the standalone EGC and MRC schemes by having lower Pout and Pt values. Hence, hybrid EGC-MRC exhibits enhanced potentials to mitigate multipath propagation at reduced system complexity.

Keywords


Equal Gain Combining (EGC), Nakagami, Outage Probability, Processing Time, Multipath, Hybrid.

References