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Generalized frequency division multiplexing (GFDM) is a new waveform that can play an important role in some 5th generation (5G) mobile wireless networks scenarios, such as 5G for remote areas. It offers low out-of-band emission, good spectral efficiency and has the flexibility to cover the 5G requirements in remote areas applications. The GFDM receiver implementation complexity poses restrictions to the use of this powerful waveform in constrained resources devices such as the ones used in the Internet of Things (IoT). This letter proposes, an innovative frequency-domain equalizer showing complexity close to the zero-forcing (ZF) receiver while achieving performance close to the Minimum Mean Square Error (MMSE) receiver. The study also evaluates the proposed equalizer performance under frequency selective fading channel for the single-input/single-output (SISO) and multiple-input/multiple-output (MIMO) cases. The results show that with a small increment in complexity a performance gain can be obtained. [ABSTRACT FROM AUTHOR]

Attenuation induced by rain is the most relevant propagation effect in satellite communications at frequencies above 10 GHz. Recent research suggests that classical and widely accepted prediction models, such as ITU-R P.618-11 and Crane, do not perform well at intense rain regime found in tropical regions. Over the last decade, several models formulated specifically for equatorial and tropical climate were proposed. This paper summarizes some of the new rain attenuation models, describing its parameters and applications. The models were tested comparing predicted attenuation values to measurements available at the ITU propagation data bank (ITU DBSG3), taken from 10 locations over the Brazilian territory. The prediction error evaluation was carried out according to the ITU Recommendation P.311. The evaluation results show that some of those prediction methods can provide better accuracy than ITU-R P.618-11 for climates found in Brazil. The use of these models satellite link budget planning can lead to a target reliability while avoiding the over dimensioned systems. [ABSTRACT FROM PUBLISHER]

Presently, a significant part of the world population does not have Internet access. The fifth-generation cellular network technology evolution (5G) is focused on reducing latency, increasing the available bandwidth, and enhancing network performance. However, researchers and companies have not invested enough effort into the deployment of the Internet in remote/rural/undeveloped areas for different techno-economic reasons. This article presents the result of a collaboration between Brazil and the European Union, introducing the steps designed to create a fully operational experimentation scenario with the main purpose of integrating the different achievements of the H2020 5G-RANGE project so that they can be trialed together into a 5G networking use case. The scenario encompasses (i) a novel radio access network that targets a bandwidth of 100 Mb/s in a cell radius of 50 km, and (ii) a network of Small Unmanned Aerial Vehicles (SUAV). This set of SUAVs is NFV-enabled, on top of which Virtual Network Functions (VNF) can be automatically deployed to support occasional network communications beyond the boundaries of the 5G-RANGE radio cells. The whole deployment implies the use of a virtual private overlay network enabling the preliminary validation of the scenario components from their respective remote locations, and simplifying their subsequent integration into a single local demonstrator, the configuration of the required GRE/IPSec tunnels, the integration of the new 5G-RANGE physical, MAC and network layer components and the overall validation with voice and data services. [ABSTRACT FROM AUTHOR]