V2EX turbo-code

Turbo-code

Definition / 定义

Turbo-code(涡轮码):一种高性能的纠错码(前向纠错,FEC),常用于蜂窝通信与卫星通信等数字传输系统。它通常由两个(或多个)递归系统卷积码与一个交织器(interleaver)组合,并通过迭代译码在接近香农极限的误码率性能下恢复数据。(也有其他更广义的“turbo”迭代编码/译码结构。)

Pronunciation / 发音

/tbo kod/

Examples / 例句

Turbo-codes help reduce errors in wireless communication.
涡轮码有助于减少无线通信中的错误。

By using iterative decoding, a turbo-code can achieve nearShannon-limit performance under noisy channel conditions.
通过迭代译码,涡轮码在噪声信道条件下可以实现接近香农极限的性能。

Etymology / 词源

Turbo-code一词中的 turbo 本义与“涡轮/增压”相关(源自拉丁语 turbo,有“旋转、涡流”之意)。在该术语里,turbo是一个形象化命名,强调其译码过程的“反复迭代、循环推进”特征。该名称在1993年由Berrou等人的经典论文中推广,用来指代这种通过交织与迭代译码取得突破性能的编码方案。

Related Words / 相关词汇

Literary Works / 文学作品例证

  • Berrou, Glavieux, Thitimajshima (1993) Near Shannon Limit Error-Correcting Coding and Decoding: Turbo-Codes(提出并奠定“Turbo-codes”术语与理论影响)
  • John G. Proakis & Masoud Salehi, Digital Communications(在数字通信教材中系统介绍涡轮码与相关译码思想)
  • 3GPP 技术规范(如UMTS/WCDMA与LTE相关文档中,涡轮码作为信道编码方案被正式采用与描述)
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