When was 'Hypergraph-Coloring-Based Pilot Allocation Algorithm for Massive MIMO Systems' published?
Mention the year in which 'Hypergraph-Coloring-Based Pilot Allocation Algorithm for Massive MIMO Systems' was published.
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/csps/LianZW18> <https://dblp.org/rdf/schema#yearOfPublication> ?answer }
<https://dblp.org/rec/conf/csps/LianZW18>