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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Analysis of Single-RF MIMO Receiver with Beam-Switching Antenna

  • Gwak, Donghyuk (Communications & Internet Research Laboratory, ETRI) ;
  • Sohn, Illsoo (Department of Electronic Engineering, Gachon University) ;
  • Lee, Seung Hwan (Communications & Internet Research Laboratory, ETRI)
  • Received : 2014.05.26
  • Accepted : 2015.05.04
  • Published : 2015.08.01
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Abstract

This paper proposes a single-RF MIMO receiver that adopts a beam-switching antenna (BSA) instead of a conventional array antenna. The beauty of the proposed single-RF MIMO receiver with BSA is that it can be deployed in a very small physical space while achieving a full spatial multiplexing gain. Our analysis has revealed that the use of a BSA inevitably results in the spectrum spreading effect at the RF output, which in turn causes an SNR decrease and adjacent channel interference (ACI). Two novel receiver techniques are proposed to mitigate the issues of redundant sub-band suppression and ACI avoidance. Numerical analysis results verify the performance improvement from the proposed receiver techniques.

Keywords

References

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