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Scalability of the channel capacity in graphene-enabled wireless communications to the nanoscale
Llatser Martí, Ignacio; Cabellos Aparicio, Alberto; Alarcón Cot, Eduardo José; Jornet Montaña, Josep Miquel; Mestres Sugrañes, Albert; Lee, Heekwan; Solé Pareta, Josep
Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions de Banda Ampla; Universitat Politècnica de Catalunya. EPIC - Disseny de circuits analògics integrats i de convertidors de potencia conmutats
Graphene is a promising material which has been proposed to build graphene plasmonic miniaturized antennas, or graphennas, which show excellent conditions for the propagation of Surface Plasmon Polariton (SPP) waves in the terahertz band. Due to their small size of just a few micrometers, graphennas allow the implementation of wireless communications among nanosystems, leading to a novel paradigm known as Graphene-enabled Wireless Communications (GWC). In this paper, an analytical framework is developed to evaluate how the channel capacity of a GWC system scales as its dimensions shrink. In particular, we study how the unique propagation of SPP waves in graphennas will impact the channel capacity. Next, we further compare these results with respect to the case when metallic antennas are used, in which these plasmonic effects do not appear. In addition, asymptotic expressions for the channel capacity are derived in the limit when the system dimensions tend to zero. In this scenario, necessary conditions to ensure the feasibility of GWC networks are found. Finally, using these conditions, new guidelines are derived to explore the scalability of various parameters, such as transmission range and transmitted power. These results may be helpful for designers of future GWC systems and networks.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors
Wireless communications systems
Graphene
Scalability
Channel capacity
Nanonetworks
Graphene-enabled wireless communications
Graphennas
Comunicació sense fil, Sistemes de
Grafè
info:eu-repo/semantics/submittedVersion
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