Networking

Enumerative Encoding in the Grassmannian Space

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Executive Summary

Codes in the Grassmannian space have found recently application in network coding. Representation of k-dimensional subspaces of Fn q has generally an essential role in solving coding problems in the Grassmannian, and in particular in encoding subspaces of the Grassmannian. Different representations of subspaces in the Grassmannian are presented. The authors use two of these representations for enumerative encoding of the Grassmannian. One enumerative encoding is based on Ferrers diagrams representation of subspaces; and another is based on identifying vector and reduced row echelon form representation of subspaces. A third method which combine the previous two is more efficient than the other two enumerative encodings.

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