Codeword metric calculation scheme for outer code in overloaded MIMO-OFDM system

Yoshihito Doi, Yukitoshi Sanada

研究成果: Conference contribution

抄録

This paper presents a codeword metric calculation scheme in two step joint decoding of block coded signals in an overloaded multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. In the previous literature, the two step joint decoding scheme has been proposed for the complexity reduction of joint maximum likelihood decoding in the overloaded MIMO system. However, the two step decoding scheme has not been combined with an outer code. The selection of the candidate codewords in the inner block code may not always be able to provide the metric of a binary coded symbol for the outer code. The metric of the binary coded symbol calculated in the first stage is used in the proposed scheme. It is shown that the proposed two step decoding scheme shows better performance than a bit flipping based scheme and reduces the complexity by about 0.013 for 4 signal streams with the cost of bit error rate degradation within 0.5dB.

本文言語English
ホスト出版物のタイトル2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781479980888
DOI
出版ステータスPublished - 2015 7月 1
イベント81st IEEE Vehicular Technology Conference, VTC Spring 2015 - Glasgow, United Kingdom
継続期間: 2015 5月 112015 5月 14

出版物シリーズ

名前IEEE Vehicular Technology Conference
2015
ISSN(印刷版)1550-2252

Other

Other81st IEEE Vehicular Technology Conference, VTC Spring 2015
国/地域United Kingdom
CityGlasgow
Period15/5/1115/5/14

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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