1) check matrix cluster
校验矩阵簇
1.
We can get the check matrix cluster through matrix elementary transformation,so the lower coding complexity and higher error-correction performance LDPC code can be selected from the check matrix cluster.
本文在总结出LDPC码校验矩阵的初等变换环路不变性和环路长度性质的基础上,提出了一种基于均匀环路的校验矩阵构造的新思路,而且还可以通过校验矩阵的矩阵初等变换得到其校验矩阵簇,在该簇中可以挑选编码复杂度低的LDPC码用在实际传输中。
2) check matrix
校验矩阵
1.
This paper, first introduces the check matrix and the factor graph of LDPC, then describes the sum-product algorithm by using the factor graph, and finally presents the detailed steps of the sum-product algorithm and gives a proof of certain important expressions.
首先介绍了LDPC 码的校验矩阵和其因子表示方法,然后利用二分图对和积解码算法进行了详细的描述,最后给出了信度传播概率译码算法详细步骤,并对关键公式作了证明。
2.
The generator matrix and check matrix of q-cyclic codes are discussed,and then the theory of rank distance codes can be studied expediently.
讨论了q-循环码的生成矩阵和校验矩阵,从而可以方便地研究秩距离码的理论。
3.
Although the check matrix of LDPC codes is sparse,the generator matrix is not.
LDPC码属于线性分组码,线性分组码的通用编码方法是由信息序列与码的生成矩阵相乘得到码字序列,尽管LDPC码的校验矩阵是非常稀疏的,但它的生成矩阵却并不稀疏,这使得其编码复杂度往往与其码长的平方成正比。
3) parity-check matrix
校验矩阵
1.
Hence,this paper reduces the complexity of coding by using effective parity-check matrix,and realizes the encoding device for LDPC code by use of large-scale integrated circuits.
为此,利用有效的校验矩阵,来降低编码的复杂度,同时研究利用大规模集成电路实现LDPC码的编码。
2.
The matrix representation of convolution code and the relation between generation matrix and parity-check matrix are introduced briefly.
简要介绍了卷积编码的矩阵描述及其生成矩阵和校验矩阵的关系,从中得出编码序列与校验矩阵之间的数学关系。
3.
As the interleaver and parity-check matrix respectively play .
由于交织器和校验矩阵分别对Turbo码和LDPC码的性能起着至关重要的作用,本文致力于交织器和校验矩阵的研究和设计。
4) Parity check matrix
校验矩阵
1.
By increasing weights of rows and columns of parity check matrix, the algorithm can achieve high rate codes and could optimize the girth distribution compared with Mackay Random construction and bit-filling algorithm.
本文提出了LDPC码校验矩阵构造算法Progressive Weight-Growth(PWG),该算法通过迭代增加校验矩阵的行重和列重,构造高码率的LDPC码。
5) check-matrix
校验矩阵
1.
This text analyzes the influence of short cycle as to the veracity and effectives of BP,which bases on Tanner of LDPC,demonstrates a detection method of short cycle presents generation algorithm of check-matrix without cycle 4 simulates the check-matrix.
在基于Tanner图的基础上分析了短环对LDPC迭代译码准确性和有效性的影响,论述了短环的检测方法,并且给出了一种有效消去周长为4的短环的校验矩阵H的生成算法,并且对该算法构造的校验矩阵进行了仿真分析。
2.
Based on the set of shortened RS code in GF(q), a generating method for the regular (LDPC) code is proposed, which is free of cycles of length 4 in the check-matrix.
该方法能够从结构上避免校验矩阵中环4结构的出现,并且提出了码字矩阵、码字候选矩阵和码元候选矩阵的构造方法;给出了码字矩阵一些性质的构造性证明,这些性质对于消除环4结构至关重要。
6) parity matrix
校验矩阵
1.
With the increasement of man\'s demand and the high speed and performance feature of Ultra Wide Band (UWB) system, this paper is focus on the research of LDPC for UWB, and proposes a method of design LDPC parity matrix with the constraints of hardware implementation.
随着人们需求的日益提高与超宽带(UWB)系统高速高性能的应用特性,本文针对LDPC码应用于超宽带系统进行了研究,并提出了一种以硬件实现的各种条件为约束来设计准循环的高性能LDPC校验矩阵,同时结合了层调度算法与Min-Sum节点更新算法并进行了改进,该算法可用于实现高速率的译码器结构。
2.
This paper presents a new method to design the parity matrix of QC Low Density Parity Check Code(QC-LDPC) with the constraints of hardware implementation.
提出一种以硬件实现的各种条件为约束设计准循环的低密度奇偶校验码的校验矩阵方法,以简化硬件结构,采用行列交换及寻找最大平均环提升译码性能的方法。
补充资料：簇簇
1.一丛丛;一堆堆。 2.丛列成行貌。 3.衣衫鲜明整洁貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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