喷泉码与可逆矩阵
Fountain Codes and Invertible Matrices
摘要:
本文讨论喷泉码,特别是其编码矩阵,这是要求可逆的。证明了编码矩阵诱导置换的结果。而且,结果是编码矩阵形成具有乘法运算的组。编码是一种变换,其减少初始高熵输入向量的熵。构造了一种特殊的编码矩阵,与理想孤子分布所构造的矩阵相比,这种编码矩阵的熵缩减效果更好。实验结果与熵减少。
英文摘要:
This paper deals with Fountain codes, and especially with their encoding matrices, which are required here to be invertible. A result is stated that an encoding matrix induces a permutation. Also, a result is that encoding matrices form a group with multiplication operation. An encoding is a transformation, which reduces the entropy of an initially high-entropy input vector. A special encoding matrix, with which the entropy reduction is more effective than with matrices created by the Ideal Soliton distribution is formed. Experimental results with entropy reduction are shown.
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