Resumo-O modo fantasma tem sido proposto como um meio de aprimorar aplicações G.fast. Entretanto, a maioria dos sistemas baseados neste utiliza apenas a primeira camada. Contudo, este artigo analisa a viabilidade de um sistema que utiliza um nível adicional do modo fantasma, chamado de segunda camada fantasma. O sistema como um todo, primeira e segunda camada, e modos diferenciais, podem atingir taxas de bit de até 15 Gbps em comprimentos de 30 m quando vectoring é aplicado, assim como apresentar níveis de EVM dentro das especificações do padrão 3GPP mesmo sob a influência de interferentes Ethernets. Palavras-Chave-Modo fantasma, segunda camada, taxa agregada, vectoring, EVM.Abstract-Phantom mode has been proposed to improve G.fast applications. However, the most of the phantom mode systems deploy the first phantom layer only. Nevertheless, this work analyses the feasibility of a system, which deploys an additional phantom mode level, called second phantom layer. The entire system, first and second layers and differential modes, can reach bit rates up to 15 Gbps in lengths up to 30 m, when vectoring is applied. The achieved levels of EVMs are according the 3GPP standard even under Ethernet interfering influence.
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