2013/05/02 by Jaemin Han, Han, Jaemin, Chih-Chun Wang +3 · 1 citation
Computer Science · Engineering · Mathematics · #Advanced Wireless Communication Technologies #Cooperative Communication and Network Coding #Full-Duplex Wireless Communications #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.1305.0503
35 pages, 4 figures, and 2 tables. This manuscript was submitted to IEEE Trans IT in May 2013
arxiv created 2013/05/02 · arxiv updated 2013/05/03
A new precoding-based intersession network coding (NC) scheme has recently been proposed, which applies the interference alignment technique, originally devised for wireless interference channels, to the 3-unicast problem of directed acyclic networks. The main result of this work is a graph-theoretic characterization of the feasibility of the 3-unicast interference alignment scheme. To that end, we first investigate several key relationships between the point-to-point network channel gains and the underlying graph structure. Such relationships turn out to be critical when characterizing graph-theoretically the feasibility of precoding-based solutions.