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On the Impact of Normalized Interference Threshold for Topological Interference Management

Hassan Kallam 1 Leonardo Cardoso 1 Jean Marie Gorce 1
1 MARACAS - Modèle et algorithmes pour des systèmes de communication fiables
CITI - CITI Centre of Innovation in Telecommunications and Integration of services, Inria Grenoble - Rhône-Alpes
Abstract : This paper presents a new formulation to build an interference topology for the multiuser unicast Topological Interference Management (TIM) based wireless network problem. Based on our interference topology formulation, we are able to evaluate the achievable rate's theoretical limit, in the asymptotic signal to noise ratio (SNR) regime, for the underlying wireless network and not just for its topological interference representation. This new formulation allows us to cope with the finite SNR regime and not just with the asymptotic SNR regime with the Degrees of Freedom (DoF) analysis. A new SNR independent interference threshold parameter is proposed and we evaluate the achievable symmetric rates of the wireless network in both the finite SNR regime and the asymptotic SNR regime. Finally, we present outer bound solutions on the new normalized interference threshold parameter for interference topologies with half-DoF-feasibility, considering both an orthogonal resource allocation and Interference Alignment (IA). These bounds specify if a given half-DoF-feasible interference topology can be, in terms of the achievable rate, the best topology or not. Using this result, we limit the search space in the normalized interference threshold parameter range, to find half-DoF-feasible interference topologies having the possibility to be the best topologies in terms of the achievable rate.
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Submitted on : Tuesday, June 30, 2020 - 12:28:41 PM
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Hassan Kallam, Leonardo Cardoso, Jean Marie Gorce. On the Impact of Normalized Interference Threshold for Topological Interference Management. EuCNC 2020 European Conference on Networks and Communications, Jun 2020, Dubrovnik, Croatia. pp. 105-110, ⟨10.1109/EuCNC48522.2020.9200973⟩. ⟨hal-02885032⟩

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