Managing inter-cell interference with advanced receivers and rank adaptation in 5G small cells

Conference: European Wireless 2015 - 21th European Wireless Conference
05/20/2015 - 05/22/2015 at Budapest, Hungary

Proceedings: European Wireless 2015

Pages: 7Language: englishTyp: PDF

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Tavares, Fernando M. L.; Berardinelli, Gilberto; Catania, Davide; Sorensen, Troels B.; Mogensen, Preben (Department of Electronic Systems, Aalborg University, Denmark)

The use of receivers with interference suppression capabilities is expected to be a significant performance booster in 5th Generation (5G) ultra-dense small cell networks. In this respect, they could represent an alternative to traditional frequency reuse techniques, facilitating the inter-cell interference management. In this paper, we evaluate whether it is possible to rely on such advanced receivers as the main tool to deal with the inter-cell interference problem. We present a system-level performance evaluation in three different dense indoor small cell scenarios using a receiver model that includes both interference rejection combining (IRC) and successive interference cancellation (SIC) principles, as well as different rank adaptation strategies. Our results confirm that interference suppression receivers with a supportive system design can indeed represent a valid alternative to frequency reuse. They achieve similar outage data rate performance in comparison to reuse strategies (resource orthogonalization), but higher average and peak throughput.