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arXiv 1009.0682cs.ITmath.IT
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模格网络编码

Network coding with modular lattices

Andreas Kendziorra, Stefan E. Schmidt

摘要:

在文献[1]中,Kötter和Kschischang提出了一种新的网络编码中的纠错码模型。该模型中的字母表是给定向量空间的子空间格,码是该格的子集,并且该字母表上的所使用的度量是映射d:(U,V)\longmapsto dim(U + V)- dim(U \bigcap V)。在本文中,我们将这个模型推广到任意模格,即我们考虑代码,这是模块格的子集。在这种一般情况下使用的度量是映射d:(x,y)\longmapsto h(x \bigvee y)- h(x \bigwedge y),其中h是晶格的高度函数。我们把这个模型应用到子模格上。此外,我们展示了一种方法来计算球的大小在某些模块格,并提出了一个球包装界,一个球覆盖界,和单例界的代码,这是模块格的子集。[1]R. Kötter,F.R. Kschischang:Coding for errors and erasures in random network coding,IEEE Trans. Inf. Theory,Vol.54,No.8,2008

英文摘要:

In [1], Kötter and Kschischang presented a new model for error correcting codes in network coding. The alphabet in this model is the subspace lattice of a given vector space, a code is a subset of this lattice and the used metric on this alphabet is the map d: (U, V) \longmapsto dim(U + V) - dim(U \bigcap V). In this paper we generalize this model to arbitrary modular lattices, i.e. we consider codes, which are subsets of modular lattices. The used metric in this general case is the map d: (x, y) \longmapsto h(x \bigvee y) - h(x \bigwedge y), where h is the height function of the lattice. We apply this model to submodule lattices. Moreover, we show a method to compute the size of spheres in certain modular lattices and present a sphere packing bound, a sphere covering bound, and a singleton bound for codes, which are subsets of modular lattices. [1] R. Kötter, F.R. Kschischang: Coding for errors and erasures in random network coding, IEEE Trans. Inf. Theory, Vol. 54, No. 8, 2008

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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