{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T18:08:25Z","timestamp":1772906905059,"version":"3.50.1"},"reference-count":21,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","license":[{"start":{"date-parts":[[2018,1,1]],"date-time":"2018-01-01T00:00:00Z","timestamp":1514764800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/ieeexplore.ieee.org\/Xplorehelp\/downloads\/license-information\/OAPA.html"}],"funder":[{"DOI":"10.13039\/501100003725","name":"Basic Science Research Program through the National Research Foundation of Korea","doi-asserted-by":"publisher","award":["NRF-2016R1D1A1B03934653"],"award-info":[{"award-number":["NRF-2016R1D1A1B03934653"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Access"],"published-print":{"date-parts":[[2018]]},"DOI":"10.1109\/access.2018.2789860","type":"journal-article","created":{"date-parts":[[2018,1,9]],"date-time":"2018-01-09T21:57:30Z","timestamp":1515535050000},"page":"4599-4607","source":"Crossref","is-referenced-by-count":34,"title":["Vertex Graph-Coloring-Based Pilot Assignment With Location-Based Channel Estimation for Massive MIMO Systems"],"prefix":"10.1109","volume":"6","author":[{"given":"Hieu Trong","family":"Dao","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1762-5915","authenticated-orcid":false,"given":"Sunghwan","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"263","reference":[{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2013.6655444"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1049\/iet-com.2016.0889"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOM.2015.7417117"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2016.2625306"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2013.130214"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2015.2404839"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1109\/LCOMM.2015.2471304"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1109\/VETECS.2011.5956438"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1049\/iet-com.2011.0134"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1109\/JSTSP.2014.2313808"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1049\/iet-com.2015.1091"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"1436","DOI":"10.1109\/TCOMM.2013.020413.110848","article-title":"Energy and spectral efficiency of very large multiuser MIMO systems","volume":"61","author":"ngo","year":"2013","journal-title":"IEEE Trans Commun"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2013.130208"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2011.060711.101155"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1109\/WCNC.2017.7925885"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1109\/LCOMM.2015.2409176"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2011.2178495"},{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2010.092810.091092"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1109\/ISIT.2012.6283031"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1002\/wcm.78"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.18201\/ijisae.273053"}],"container-title":["IEEE Access"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx7\/6287639\/8274985\/08252924.pdf?arnumber=8252924","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,1,12]],"date-time":"2022-01-12T16:14:56Z","timestamp":1642004096000},"score":1,"resource":{"primary":{"URL":"http:\/\/ieeexplore.ieee.org\/document\/8252924\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018]]},"references-count":21,"URL":"https:\/\/doi.org\/10.1109\/access.2018.2789860","relation":{},"ISSN":["2169-3536"],"issn-type":[{"value":"2169-3536","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018]]}}}