A Dynamic Optimization based Algorithm for Pilot Assignment in Massive MIMO

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dc.authorwosidKulaç, Selman/JFJ-2682-2023en_US
dc.contributor.authorPakyurek, Muhammet
dc.contributor.authorKulac, Selman
dc.date.accessioned2024-08-23T16:07:19Z
dc.date.available2024-08-23T16:07:19Z
dc.date.issued2023en_US
dc.departmentDüzce Üniversitesien_US
dc.description.abstractIn this study, we propose an efficient algorithm for the optimization of pilot assignment to reduce pilot contamination in multi-cell multi-user massive multiple-input multiple-output (MIMO) systems. The object function of the proposed optimization approach is based on the cumulative average uplink Signal to Interference plus Noise Ratio (SINR) values. This method effectively optimizes pilot-user matchings using an efficient search which wisely reduces both search spaces of users and pilots. It dynamically calculates search space reductions after updating each cell iteratively. This reduction is performed by selecting only the users whose SINR value is below the average SINR of the each cell. On the other hand, the pilot's search space is reduced by choosing only the least-used pilots within close neighboring cells' pilot usages. This calculation is performed for each cell to increase the cumulative average SINR (global SINR) value. Pilot contamination is reduced to minimum levels with less complexity and memory requirements with the proposed method in this manner. The simulation results indicate that the proposed method outperforms the recent popular analytical and deep learning-based pilot assignment approaches. The achieved improvement is even more prominent when all the pilots are fully used.en_US
dc.identifier.endpage1369en_US
dc.identifier.issn1016-2364
dc.identifier.issue6en_US
dc.identifier.startpage1357en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12684/14598
dc.identifier.volume39en_US
dc.identifier.wosWOS:001133548500002en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherInst Information Scienceen_US
dc.relation.ispartofJournal of Information Science and Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectdynamic optimizationen_US
dc.subjectmassive MIMOen_US
dc.subjectpilot assignmenten_US
dc.subjectpilot contaminationen_US
dc.subjectcapacity optimizationen_US
dc.subjectAllocationen_US
dc.titleA Dynamic Optimization based Algorithm for Pilot Assignment in Massive MIMOen_US
dc.typeArticleen_US

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