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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Efficient Near-Optimal Detection with Generalized Sphere Decoder for Blind MU-MIMO Systems

  • Kim, Minjoon (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Park, Jangyong (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Hyunsub (Department of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Jaeseok (Department of Electrical and Electronic Engineering, Yonsei University)
  • Received : 2013.10.23
  • Accepted : 2014.01.22
  • Published : 2014.08.01
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Abstract

In this letter, we propose an efficient near-optimal detection scheme (that makes use of a generalized sphere decoder (GSD)) for blind multi-user multiple-input multiple-output (MU-MIMO) systems. In practical MU-MIMO systems, a receiver suffers from interference because the precoding matrix, the result of the precoding technique used, is quantized with limited feedback and is thus imperfect. The proposed scheme can achieve near-optimal performance with low complexity by using a GSD to detect several additional interference signals. In addition, the proposed scheme is suitable for use in blind systems.

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References

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Cited by

  1. Adaptive Interference-Aware Receiver for Multiuser MIMO Downlink Transmission in IEEE 802.11ac Wireless LAN Systems vol.eb99, pp.8, 2014, https://doi.org/10.1587/transcom.2015ebp3505