BP MIMO Detection with MMSE Pre-cancellation Sub-matrix Switching

Takashi Imamura, Yukitoshi Sanada

研究成果: Conference contribution

抄録

In this paper, belief propagation (BP) multiple-input multiple-output (MIMO) detection with minimum mean square error (MMSE) pre-cancellation matrix switching in overloaded MIMO systems is proposed. Loops in a factor graph degrades the demodulation performance of the BP scheme. Therefore, several schemes that suppresses the negative impact of loopy BP have been proposed. Among them, the application of MMSE pre-cancellation prior to BP has been proposed. In the scheme, the effects of loops in the factor graph is suppressed by MMSE pre-cancellation. However, many loops with large coefficients remain in the factor graph even after MMSE pre-cancellation. Therefore, the proposed scheme applies MMSE pre-cancellation matrix switching every after a preset number of BP iterations in order to suppress the occurrence of large beliefs in the loops. Numerical results obtained through computer simulation show that the proposed scheme achieves better BER performance than BP with MMSE pre-cancellation without matrix switching. The proposed scheme outperforms the conventional without switching by 0.7 dB at BER= 10-3.

本文言語English
ホスト出版物のタイトル2022 IEEE 95th Vehicular Technology Conference - Spring, VTC 2022-Spring - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781665482431
DOI
出版ステータスPublished - 2022
イベント95th IEEE Vehicular Technology Conference - Spring, VTC 2022-Spring - Helsinki, Finland
継続期間: 2022 6月 192022 6月 22

出版物シリーズ

名前IEEE Vehicular Technology Conference
2022-June
ISSN(印刷版)1550-2252

Conference

Conference95th IEEE Vehicular Technology Conference - Spring, VTC 2022-Spring
国/地域Finland
CityHelsinki
Period22/6/1922/6/22

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学

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