公开(公告)号：KR1020090065411A

公开(公告)日：2009-06-22

申请号：KR1020080043580

申请日：2008-05-09

Applicant: 한국전자통신연구원

Inventor： 최은아 ,  장대익 ,  이기준 ,  정하봉

IPC: H03M13/11 ,  H04L1/00

CPC classification number: H03M13/616 ,  H03M13/114 ,  H03M13/1165 ,  H03M13/3723 ,  H04L1/0045 ,  H04L1/0057

Abstract: A preprocessing apparatus for improving a convergent speed in a decoding process of group unit, and a method thereof are provided to group a receiving signal by calculating a LLR(Log Likelihood Ratio) of the receiving signal. A LLR calculating part(110) calculates a LLR of a receiving signal. A signal sorting part(120) sorts the receiving signal based on a size of the LLR calculated in the LLR calculating part. The signal sorting part sorts the receiving signal into an ascending order based on the size of the LLR of the receiving signal. The signal sorting part performs a bit node update and a check node update from a group of the receiving signals having low reliability to a group of the receiving signals having high reliability. A grouping part(130) groups the receiving signal sorted in the signal sorting part. The grouping part groups a whole receiving signal sorted in the signal sorting part into the same rate according to the number of set groups.

Abstract translation: 提供一种用于提高组单元的解码处理中的收敛速度的预处理装置及其方法，用于通过计算接收信号的LLR（对数似然比）来对接收信号进行分组。 LLR计算部（110）计算接收信号的LLR。 信号分类部（120）基于在LLR计算部中计算的LLR的大小对接收信号进行分类。 信号分类部根据接收信号的LLR的大小对接收信号进行排序。 信号分配部件对具有高可靠性的一组接收信号的一组具有低可靠性的接收信号执行位节点更新和校验节点更新。 分组部分（130）对在信号分类部分中分类的接收信号进行分组。 分组部分根据设定组的数量将在信号分类部分中分类的整个接收信号分组成相同的速率。

公开(公告)号：KR1020090064268A

公开(公告)日：2009-06-18

申请号：KR1020080043579

申请日：2008-05-09

Applicant: 한국전자통신연구원

Inventor： 최은아 ,  장대익 ,  이기준 ,  정하봉

IPC: H03M13/11

CPC classification number: H03M13/112 ,  H03M13/1165 ,  H03M13/658 ,  H03M13/6583

Abstract: A decoding apparatus and a decoding device are provided to obtain the optimum decoding performance in a low code rate by performing the decoding by using a variable correction value every iteration decoding in a check node update process. An initial normalizing constant and a normalizing constant correction value are set up(301). A check node is initially updated by using an initial normalizing constant(302). When updating the check node again, the update is performed by using the variable correction value adding the normalizing constant correction value to the initial normalizing constant(303). The update is performed by adding the normalizing constant correction value to the variable correction value applied to the prior update every an additional update(304).

Abstract translation: 提供一种解码装置和解码装置，通过在校验节点更新处理中通过每次迭代解码使用可变校正值进行解码，以低码率获得最佳解码性能。 建立初始归一化常数和归一化常数校正值（301）。 最初通过使用初始归一化常数（302）更新校验节点。 当再次更新校验节点时，通过使用将归一化常数校正值加到初始归一化常数（303）的可变校正值来执行更新。 通过将归一化常数校正值添加到每个附加更新应用于先前更新的可变校正值来执行更新（304）。