{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T08:34:53Z","timestamp":1769675693826,"version":"3.49.0"},"reference-count":31,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/ieeexplore.ieee.org\/Xplorehelp\/downloads\/license-information\/IEEE.html"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Wireless Commun. Lett."],"published-print":{"date-parts":[[2026]]},"DOI":"10.1109\/lwc.2026.3653264","type":"journal-article","created":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T22:01:45Z","timestamp":1768255305000},"page":"1430-1434","source":"Crossref","is-referenced-by-count":0,"title":["Source Enumeration Using the Distribution of Angles: A Parameter-Free Approach for Grant-Free Access in Massive MIMO Uplink"],"prefix":"10.1109","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5909-8143","authenticated-orcid":false,"given":"Gokularam","family":"Muthukrishnan","sequence":"first","affiliation":[{"name":"India Urban Data Exchange, Indian Institute of Science, Bengaluru, India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4697-249X","authenticated-orcid":false,"given":"Siva","family":"Shanmugam","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai, India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1530-0140","authenticated-orcid":false,"given":"Sheetal","family":"Kalyani","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai, India"}]}],"member":"263","reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1109\/LWC.2016.2585549"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2017.7996860"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1109\/LWC.2024.3439555"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2009.2022897"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2013.2273198"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1109\/TAES.2014.130579"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2021.3053495"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2022.3154229"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1109\/TAES.2024.3395233"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1109\/TAES.2025.3553467"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2024.3387353"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2024.3351856"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2020.2973976"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2022.3213279"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2025.3544231"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2021.3052052"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2020.2978507"},{"issue":"1","key":"ref18","first-page":"1837","article-title":"Distributions of angles in random packing on spheres","volume":"14","author":"Cai","year":"2013","journal-title":"J. Mach. Learn. Res."},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2019.2905826"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2020.3018665"},{"issue":"1","key":"ref21","first-page":"99","article-title":"On a measure of divergence between two statistical populations defined by their probability distribution","volume":"35","author":"Bhattacharyya","year":"1943","journal-title":"Bull. Calcutta Math. Soc."},{"key":"ref22","doi-asserted-by":"publisher","DOI":"10.1109\/TSMC.1976.4309450"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1111\/j.0006-341X.2001.01173.x"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.2139\/ssrn.433840"},{"key":"ref25","doi-asserted-by":"publisher","DOI":"10.1016\/j.jmva.2023.105184"},{"key":"ref26","doi-asserted-by":"publisher","DOI":"10.1109\/TAP.1986.1143830"},{"key":"ref27","doi-asserted-by":"publisher","DOI":"10.1109\/TASSP.1986.1164935"},{"key":"ref28","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2003.812831"},{"key":"ref29","volume-title":"Array Signal Processing: Concepts and Techniques","author":"Johnson","year":"1992"},{"key":"ref30","doi-asserted-by":"publisher","DOI":"10.1016\/j.jmva.2011.11.008"},{"key":"ref31","doi-asserted-by":"publisher","DOI":"10.1080\/01621459.2020.1773831"}],"container-title":["IEEE Wireless Communications Letters"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx8\/5962382\/11304577\/11345630.pdf?arnumber=11345630","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T21:00:10Z","timestamp":1769634010000},"score":1,"resource":{"primary":{"URL":"https:\/\/ieeexplore.ieee.org\/document\/11345630\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":31,"URL":"https:\/\/doi.org\/10.1109\/lwc.2026.3653264","relation":{},"ISSN":["2162-2337","2162-2345"],"issn-type":[{"value":"2162-2337","type":"print"},{"value":"2162-2345","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026]]}}}