Experimental Verification of Interference Mitigation Techniques for 5G Small Cells

Dereje Assefa, Gilberto Berardinelli, Fernando Menezes Leitão Tavares, Troels Bundgaard Sørensen, Preben Elgaard Mogensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

7 Citations (Scopus)

Abstract

Inter-cell interference is the main performance limiting factor in the dense deployment of small cells targeted by the upcoming 5th Generation (5G) radio access technology. In this paper, we present an experimental evaluation of inter-cell interference mitigation techniques in a real indoor office deployment with four cells, where each cell features one Access Point (AP) and one User Equipment (UE). In particular, we compare traditional Frequency Reuse Planning (FRP) with the recently proposed Maximum Rank Planning (MRP) technique, which relies on the degrees of freedom offered by the multi-antenna transceivers for suppressing a number of interfering streams. Different receiver types are also considered, namely Interference Rejection Combining (IRC) and the interference unaware Maximum Ratio Combining (MRC). Each node in our software defined radio (SDR) testbed features a 2 x 2 MIMO transceiver built with the USRP N200 hardware by Ettus Research. The experimental results in a fully loaded network reveal the capability of the MRP technique to achieve higher throughput performance than FRP for 90% of the cases when IRC receivers are used. Lower network loads lead to further performance improvements for MRP.
Original languageEnglish
Title of host publicationIEEE 81st Vehicular Technology Conference (VTC Spring), 2015
Number of pages5
PublisherIEEE Press
Publication date11 May 2015
ISBN (Electronic)978-1-4799-8088-8
DOIs
Publication statusPublished - 11 May 2015
Eventvehicular technology conference : Spring - Glasgow, United Kingdom
Duration: 11 May 201515 May 2015
http://www.ieeevtc.org/vtc2015spring/

Conference

Conferencevehicular technology conference
Country/TerritoryUnited Kingdom
CityGlasgow
Period11/05/201515/05/2015
Internet address
SeriesI E E E V T S Vehicular Technology Conference. Proceedings
Volume81
ISSN1550-2252

Keywords

  • 5G, Interference Rejection Combining (IRC), MIMO, SDR testbed, USRP, FRP, MRP, Rank adaptation.

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