Performance Analysis of a Selection Combining System That Uses the Minimal Interference Algorithm

Abstract

In this paper, a new combining algorithm for selection combining (SC) receiver based on selection of diversity branch with the lowest interference is proposed. The system used for analysis consists of dual-branch SC diversity that operates over correlated Weibull fading channels. Closed-form expressions for joint probability density function (PDF) of desired signal and interference at the output and PDF of instantaneous signal-to-interference ratio (SIR) at the output are obtained and used to investigate important system performance indicators. System performance is analyzed using outage probability, average bit error probability (ABEP) and average output SIR. The obtained results are compared with the previously published for the SIR algorithm employed by the same system.

KEYWORDS:

• Cochannel interference
• Correlated fading channels
• Dual-channel reception
• Minimal interference algorithm
• Selection combining diversity
• Weibull fading

Acknowledgements

The authors would like to thank the Editor and the anonymous reviewers for their helpful comments that considerably improved the quality of this paper.

Additional information

Funding

This work has been funded by Serbian Ministry for Education and Science under the project TR-32052.

Notes on contributors

Aleksandra D. Golubovic

Aleksandra D Golubovic was born in Nis, Serbia, in 1983. She received her MSc, PhD from the Faculty of Electronic Engineering (Department of Telecommunications), University of Niš, Serbia, in 2008 and 2017, respectively. Her research interests are wireless communications and digital communications over fading channels. Email: [email protected]

Nikola M. Sekulovic

Nikola M Sekulovic was born in Nis, Serbia, in 1983. He received MSc and PhD from the Faculty of Electronic Engineering (Department of Telecommunications), University of Nis, Serbia, in 2007 and 2012, respectively. He is currently working as a professor at the College of Applied Technical Sciences. His research interests include signal processing, statistical characterization and modeling of fading channels, diversity techniques and mobile radio systems. Corresponding author. Email: [email protected]

Mihajlo C. Stefanovic

Mihajlo C Stefanovic was born in Nis, Serbia, in 1947. He received BSc, MSc and PhD in electrical engineering from the Faculty of Electronic Engineering (Department of Telecommunications), University of Nis, Serbia, in 1971, 1976 and 1979, respectively. His primary research interests are statistical communication theory, optical and wireless communications. He has written or co-authored a great number of journal publications and five monographs. Email: [email protected]

Dejan N. Milic

Dejan N Milic was born in Nis, Serbia in 1972. He received BSc, MSc and PhD in electrical engineering from the Faculty of Electronic Engineering, University of Nis, Serbia, in 1997, 2001 and 2005, respectively. He is currently an associate professor at the Department of Telecommunications at the same Faculty. His research interests include communication theory, modulation and wireless communications. Email: [email protected]

Zorica B. Nikolic

Zorica B Nikolić was born in Nis, Serbia, in 1955. She received BSc, MSc and PhD at the University of Nis, Faculty of Electronic Engineering, Nis, Serbia, in 1979, 1985 and 1989, respectively. She is now a professor at the Faculty of Electronic Engineering, Nis, Serbia, where she teaches Basics of Telecommunications and Telecommunication Networks. Her main field of interest includes mobile telecommunications, and especially the application of spread spectrum systems in mobile communications. Email: [email protected]