Percorrer por autor "Esfahanizadeh, Homa"
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- Bringing network coding into SDN: architectural study for meshed heterogeneous communicationsPublication . Cohen, Alejandro; Esfahanizadeh, Homa; Sousa, Bruno; Vilela, João P.; Luís, Miguel; Raposo, Duarte; Michel, François; Sargento, Susana; Medard, MurielModern communications have moved away from point-to-point models to increasingly heterogeneous network models. In this article, we propose a novel controller-based architecture to deploy adaptive causal network coding in heterogeneous and highly meshed communication networks. Specifically, we consider using the software-defined network as the main controller. We first present an architecture for highly meshed heterogeneous multi-source multi-destination networks that represent the practical communication networks encountered in the fifth generation of wireless networks and beyond. Next, we present a promising solution to deploy network coding over the new architecture. We also present a new controller-based setting with which network coding modules communicate to attain the required information. Finally, we briefly discuss how the proposed architecture and network coding solution provide a good opportunity for future technologies.
- Millimeter-wave testbed and modeling in NeXt generation URLLC communicationsPublication . Dias, Eurico; Garcia Raposo, Duarte Miguel; Esfahanizadeh, Homa; Cohen, Alejandro; Vasudevan, Vipindev Adat; Ferreira, Tania; Luís, Miguel; Sargento, Susana; Médard, MurielModeling realistic millimeter-wave (mmWave) channels is crucial to the study of ultra-reliable communication in next-generation wireless networks. MmWave provides significant gains over sub-6GHz communication but has very stringent requirements on channel conditions, since slight variations in the channel may result in significant performance degradation of mmWave communication. In this work, we present an experimental mmWave testbed and the mathematical modeling of the channels using the measurements collected from an outdoor testbed that complies with IEEE 802.11ad. We show how the model fits the reality and demonstrate the impact of adaptive causal network coding in mmWave real and simulated networks.