User experience and traffic volumes, mobile networks need to evolve towards providing higher capacities and data rates. In this paper we investigate the feasibility of incorporating higher frequency bands (15 GHz) and beamforming to support this evolution. We see that using user-specific beamforming, the challenging propagation conditions at higher frequencies are mitigated and outdoor-in coverage is often possible. In places where 15 GHz coverage is not satisfactory, swift fallback to a lower frequency band is essential. This is seamlessly provided by carrier aggregation with a 2.6 GHz band. Together these components provide a ten-fold increase in capacity over a reference system operating only at 2.6 GHz.
Fredrik Athley; Sibel Tombaz; Eliane Semaan; Claes Tidestav; and Anders Furuskär.
Published 2015-08-30, In Proceedings of 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC).
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