linear adj. 1.線的,直線的。 2.長度的。 3.【數(shù)學(xué)】一次的,線性的。 4.【動、植】線狀的;細(xì)長的。 5.由線條組成的,以線條為主的,強(qiáng)調(diào)線條的。 linear amplification 直線放大。 a linear equation 一次方程式。 a linear leaf 線形葉。 linear arts 線條藝術(shù)。
code n. 1.法典;法規(guī)。 2.規(guī)則,準(zhǔn)則;(社會、階級等的)慣例,習(xí)俗,制度。 3.(電)碼,代碼,密碼,暗碼;代號,略號,暗號。 4.【生物學(xué)】遺傳(密)碼。 the civil [criminal] code民[刑]法典。 the moral code道德準(zhǔn)則。 code of signals 信號密碼(本)。 code of the school 校規(guī)。 code and conventions 規(guī)章制度。 C- Napoléon 拿破侖法典。 C- of Hammurabi (古代巴比倫的)漢穆拉比法典。 code of honour 社會禮法;決斗慣例。 code of written law 成文法典。 the International Code 國際電碼。 the Morse code 摩爾斯電碼。 vt. 1.把…編成法典[法規(guī)]。 2.把…譯成[編成]電碼;編(碼);譯(碼)。 n. -r 【自動化】編碼裝置;【電訊】記發(fā)器。
The background and research situation of ldpc codes are presented and the current research results are introduced in the first part of the thesis . graph presentation and sum - product algorithm are interpreted in detail . linear coding theory and efficient constructing methods on ldpc codes are systemically interpreted later 系統(tǒng)地闡述了ldpc碼的圖模型表示方法及基于圖模型的譯碼原理;詳細(xì)地介紹了ldpc碼的構(gòu)造方法及其線性編碼理論;介紹了用于ldpc碼閾值分析和度序列設(shè)計的密度進(jìn)化理論; 2
In this paper , we study the stopping sets , stopping distance and stopping redundancy for binary linear codes . stopping redundancy is a new concept proposed by schwartz and vardy recently for evaluating the performance of a linear code under iterative decoding over a binary erasure channel . since the exact value of stopping redundancy is difficult to obtain in general , good lower and upper bounds are important 近年來,迭代譯碼的性能分析是低密度校驗ldpc碼研究領(lǐng)域的熱點問題之一, di等人在2001年指出:迭代譯碼在二元刪除信道bec中的性能可以由ldpc碼的停止集stopping set完全刻畫。
In coding theory, a linear code is an error-correcting code for which any linear combination of codewords is also a codeword. Linear codes are traditionally partitioned into block codes and convolutional codes, although turbo codes can be seen as a hybrid of these two types.