摘要
Turbo码是一种目前研究比较多的纠错码,译码端采用了基于软判决信息输入/输出的反馈迭代结构,译码的迭代是其具有优越纠错性能的关键,也是造成其时延的问题所在,该文提出一种自适应选择迭代次数的方法,实验表明该方法能够在译码结果收敛时自动停止迭代,避免大量无谓的计算,同时保证译码的准确性。
Turbo codes is error control coding.The decoding of Turbo codes relies on the application of soft input /soft output decoders.The key of its perfect performance is that turbo codes adopts iterative decoding.It also produces delay.This paper cascades a self-adaptive approach to choose the iterative time.The experiment shows that the proposed scheme could stop iterative computing when the calculational result is correct.It can avoid large numbers of meaningless computation and reduce the delay-time.
出处
《计算机工程与应用》
CSCD
北大核心
2003年第5期108-109,113,共3页
Computer Engineering and Applications
基金
安徽省自然科学基金项目(编号:00043404)
