CAJ | 학술논문

上世纪60年代初,香农的学生Gallager在他的博士毕业论文中首次提出了LDPC码的概念和完整的译码方法,但是直到上世纪末期,随着LDPC码译码理论的进步和计算机技术的发展,LDPC码才以其优良的误码性能和良好的可实现性成为人们研究的焦点。针对QC类LDPC码进行研究的时候,注意到很多码的循环子矩阵中不只有一组1,这就产生了水平运算后判断运算结果属于哪个存储模块的问题;另外,由于校验矩阵中每个循环子矩阵的列初始位置都是不同的,而且通常LDPC码的校验矩阵的循环子矩阵的数目都是非常庞大的,因此如果通过程序固化的方法,不但容易出现不易排查的错误,而且开发效率会大大下降。为解决该问题,并将解决方案通用化,文中以校验矩阵中循环子矩阵中1的排列特点为研究对象,找到引起变化的量之间的共性特征,从而实现通用化模块的设计。
상세기60년대초,향농적학생Gallager재타적박사필업논문중수차제출료LDPC마적개념화완정적역마방법,단시직도상세기말기,수착LDPC마역마이론적진보화계산궤기술적발전,LDPC마재이기우량적오마성능화량호적가실현성성위인문연구적초점。침대QC류LDPC마진행연구적시후,주의도흔다마적순배자구진중불지유일조1,저취산생료수평운산후판단운산결과속우나개존저모괴적문제;령외,유우교험구진중매개순배자구진적렬초시위치도시불동적,이차통상LDPC마적교험구진적순배자구진적수목도시비상방대적,인차여과통과정서고화적방법,불단용역출현불역배사적착오,이차개발효솔회대대하강。위해결해문제,병장해결방안통용화,문중이교험구진중순배자구진중1적배렬특점위연구대상,조도인기변화적량지간적공성특정,종이실현통용화모괴적설계。
At the beginning of 60 s of last century,Gallager,the student of Shannon issued the concept and a whole set of method for decoding of LDPC code at the first time in the world. But the LDPC code had not been on the focus of our research with its super performance until the end of the last century, for the improvement of the LDPC decoding theory and the development of the computer technology. When we research the QC-LDPC code, we realize that many kinds of LDPC codes do not only have one set of 1 ,and this leads the question that the result of CNU belongs to which memory module. Meanwhile, because of the difference of all column initial position of every submatrix and the large number of the submatrix of the check matrix, we can not easily solidify the location of each 1 and this will lead errors which can not be easily found and the low efficiency of exploitation. To solve this question and generalize the module, this thesis researches the character of the arrangement rules of lin submatrix, finds the commonness of variable, and realizes the design of the general-purpose module.