Informed message update for iterative MIMO demapping and turbo decoding

Dan Zhang*, I. Wei Lai, Konstantinos Nikitopoulos, Gerd Ascheid

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

2 引文 斯高帕斯(Scopus)

摘要

In this paper, the iterative scheduling issue for multiple-input multiple-output (MIMO) systems with turbo codes is addressed based on the informed asynchronous scheduling, initially used for scheduling low-density parity-check (LDPC) decoding. For the iterative MIMO demapping and turbo decoding, the convergence behavior by using the informed asynchronous scheduling is first demonstrated to be similar to the standard sequential scheduling. As the extrinsic log-likelihood ratio (LLR) calculation at both the MIMO demapper and turbo decoder costs high complexity, an informed message update (IMU) rule is further proposed to select only a subset of extrinsic LLRs for updates within each iteration. By avoiding the re-calculations for the extrinsic LLRs with small changes between successive iterations, significant complexity savings are achieved with negligible error rate performance loss.

原文英語
主出版物標題ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications
頁面873-878
頁數6
DOIs
出版狀態已發佈 - 2010
對外發佈
事件2010 20th International Symposium on Information Theory and Its Applications, ISITA 2010 and the 2010 20th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA 2010 - Taichung, 臺灣
持續時間: 2010 10月 172010 10月 20

出版系列

名字ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications

會議

會議2010 20th International Symposium on Information Theory and Its Applications, ISITA 2010 and the 2010 20th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA 2010
國家/地區臺灣
城市Taichung
期間2010/10/172010/10/20

ASJC Scopus subject areas

  • 計算機理論與數學
  • 資訊系統

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