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http://dx.doi.org/10.7236/JIIBC.2017.17.4.95

Topological Interference Management via 8 Trigram  

Lee, Moon Ho (Dept. Division of Electronic Engineering, Chonbuk National University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.17, no.4, 2017 , pp. 95-106 More about this Journal
Abstract
In this paper, we investigate the conventional topological interference management (TIM) with proposed network topology such as 8 trigram (8 user networks). The key observation is that optimal symmetric degree of freedom (DoF) can be achieved for 8 user network with different channel coherence times by adaptively selecting the interference alignment scheme via controlling the alignment feasibility of the transmitted signals. However, this yields a very complex problem, for which we use the combination of different schemes such as interference avoidance and repetition coding. In addition to the above schemes, we propose a triangular transmit cooperation (TTC) algorithm for 8 user networks to achieve the optimal symmetric DoF. And We apply the principle of complementarity of 8 trigram to remove the interferences, and correspond the concepts of win-win and conflict to direct and indirect signals of transmit and receive respectively. We find that the principle of complementarity comes out from the trigram of I Ching. That is, we apply the relation of confrontation and coexistence to 8 transmitters and receivers, and get the results of symmetric DoF of 4/3.
Keywords
8 Trigram; DoF; Topological Interference Management; Triangular Transmit Cooperation;
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