Reduced path viterbi decoder with inverse circuit of the encoder

Takaya Yamazato, Iwao Sasase, Shinsaku Mori, Masaaki Katayama, Akira Ogawa

研究成果: Conference contribution

抄録

A reduced path Viterbi decoder with inverwe circuit of the encoder is proposed. The proposed system consists of the pre-decoder and reduced path Viterbi decoder. The pre-decoder separates the mixed channel noise from the received sequence. The number of errors in the pre-decoded error sequence is counted and the path reduction is implemented by the number of errors in pre-decoded error sequence. The path reduction is implemented as a function of channel condition because the errors in the pre-decoded error sequence can be considered as the channel error sequence. Due to the reduction of the path, the number of ACS (add compare select) operations can be reduced, which occupies the dominant part in Viterbi decoding. The ACS reduction ratio for the proposed system achieves up to 30% for the case of (2,1,2) Ungerboeck code without degradation of the error performance.

本文言語English
ホスト出版物のタイトルProc IEEE 1993 Pac Rim Conf Commun Comput Signal Process
出版社Publ by IEEE
ページ569-572
ページ数4
ISBN(印刷版)0780312198
出版ステータスPublished - 1993 1月 1
外部発表はい
イベントProceedings of the IEEE 1993 Pacific Rim Conference on Communications, Computers and Signal Processing - Victoria, BC, Can
継続期間: 1993 5月 191993 5月 21

出版物シリーズ

名前Proc IEEE 1993 Pac Rim Conf Commun Comput Signal Process

Other

OtherProceedings of the IEEE 1993 Pacific Rim Conference on Communications, Computers and Signal Processing
CityVictoria, BC, Can
Period93/5/1993/5/21

ASJC Scopus subject areas

  • 工学(全般)

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