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Wireless Personal Communications

, Volume 104, Issue 3, pp 1065–1074 | Cite as

Design of Simple and Efficient Multi-branch Selection Combining System

  • Semyoung OhEmail author
  • Jongha Yoon
  • Taehwan Cho
Article
  • 11 Downloads

Abstract

To overcome the performance limit of multi-branch switch and stay combining (SSC) systems, the branches are divided into a pair of sub-SSC systems that are connected to selection combining. To evaluate the proposed system, the general mathematical expressions of average output signal-to-noise ratio (SNR) for the independent Nakagami-m fading branches are provided. There are deduced for the case in which one branch has higher or lower average SNR than the other branches. We also perform a numerical analysis, and demonstrate that this simple structure reconfiguration considerably increases the performance of SSC systems in several environments.

Keywords

Diversity methods Nakagami-m fading model Switch and stay combining Selection combining Average SNR 

Notes

Acknowledgements

The author would like to thank anonymous reviewers for their thoughtful and valuable comments, which increased the quality of this paper.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Electronic and Communication EngineeringRepublic of Korea Air Force AcademyCheongjuSouth Korea
  2. 2.Air Force Research WingRepublic of Korea Air Force HeadquartersGyeryongSouth Korea

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