{"id":"https://openalex.org/W3204216068","doi":"https://doi.org/10.1109/icccworkshops52231.2021.9538934","title":"Analysis of System Capacity of Grant-free Access with Massive MIMO","display_name":"Analysis of System Capacity of Grant-free Access with Massive MIMO","publication_year":2021,"publication_date":"2021-07-28","ids":{"openalex":"https://openalex.org/W3204216068","doi":"https://doi.org/10.1109/icccworkshops52231.2021.9538934","mag":"3204216068"},"language":"en","primary_location":{"id":"doi:10.1109/icccworkshops52231.2021.9538934","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icccworkshops52231.2021.9538934","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100769481","display_name":"Hao Wang","orcid":"https://orcid.org/0000-0002-1444-2657"},"institutions":[{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Hao Wang","raw_affiliation_strings":["Dept. of Electronic Engineering, Tsinghua University, Beijing, China"],"affiliations":[{"raw_affiliation_string":"Dept. of Electronic Engineering, Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100720560","display_name":"Xiujun Zhang","orcid":"https://orcid.org/0000-0001-9402-2777"},"institutions":[{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiujun Zhang","raw_affiliation_strings":["BNRIST, Tsinghua University, Beijing, China"],"affiliations":[{"raw_affiliation_string":"BNRIST, Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5059270582","display_name":"Shidong Zhou","orcid":"https://orcid.org/0000-0003-3307-0067"},"institutions":[{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shidong Zhou","raw_affiliation_strings":["Dept. of Electronic Engineering, Tsinghua University, Beijing, China"],"affiliations":[{"raw_affiliation_string":"Dept. of Electronic Engineering, Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5100769481"],"corresponding_institution_ids":["https://openalex.org/I99065089"],"apc_list":null,"apc_paid":null,"fwci":0.1003,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.43748073,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"410","last_page":"415"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11392","display_name":"Energy Harvesting in Wireless Networks","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.854054868221283},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6384580135345459},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.5983231663703918},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.5957865715026855},{"id":"https://openalex.org/keywords/channel-capacity","display_name":"Channel capacity","score":0.5345306396484375},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5310568809509277},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.5092910528182983},{"id":"https://openalex.org/keywords/3g-mimo","display_name":"3G MIMO","score":0.5041412115097046},{"id":"https://openalex.org/keywords/multi-user-mimo","display_name":"Multi-user MIMO","score":0.4613167941570282},{"id":"https://openalex.org/keywords/antenna","display_name":"Antenna (radio)","score":0.44923004508018494},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.27883443236351013}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.854054868221283},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6384580135345459},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.5983231663703918},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.5957865715026855},{"id":"https://openalex.org/C97744766","wikidata":"https://www.wikidata.org/wiki/Q870845","display_name":"Channel capacity","level":3,"score":0.5345306396484375},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5310568809509277},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.5092910528182983},{"id":"https://openalex.org/C165650700","wikidata":"https://www.wikidata.org/wiki/Q4636347","display_name":"3G MIMO","level":4,"score":0.5041412115097046},{"id":"https://openalex.org/C91330434","wikidata":"https://www.wikidata.org/wiki/Q738298","display_name":"Multi-user MIMO","level":4,"score":0.4613167941570282},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.44923004508018494},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.27883443236351013},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icccworkshops52231.2021.9538934","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icccworkshops52231.2021.9538934","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W1971443733","https://openalex.org/W2093736326","https://openalex.org/W2127401968","https://openalex.org/W2141682101","https://openalex.org/W2143127988","https://openalex.org/W2643502490","https://openalex.org/W2706056020","https://openalex.org/W2778904866","https://openalex.org/W2784331297","https://openalex.org/W2890736047","https://openalex.org/W2963322354","https://openalex.org/W2979111350","https://openalex.org/W2990749693","https://openalex.org/W2992689511","https://openalex.org/W2998719573","https://openalex.org/W3009941701","https://openalex.org/W3045491813","https://openalex.org/W3101568609","https://openalex.org/W3103121750","https://openalex.org/W3130059672","https://openalex.org/W6776049779"],"related_works":["https://openalex.org/W2561058892","https://openalex.org/W2545343974","https://openalex.org/W4200145345","https://openalex.org/W2164743418","https://openalex.org/W2558549271","https://openalex.org/W1539855486","https://openalex.org/W3198080347","https://openalex.org/W1972421050","https://openalex.org/W2002714030","https://openalex.org/W4231582551"],"abstract_inverted_index":{"Massive":[0],"sporadic":[1],"access":[2,14,143],"is":[3,15,34,71,108,181],"a":[4,72,126,204],"crucial":[5],"scenario":[6],"in":[7,74,195],"the":[8,38,42,75,81,89,96,103,116,137,158,161,164,169,183,189,196,212,218,223],"future":[9],"wireless":[10],"communications,":[11],"where":[12],"grant-free":[13,128],"preferred":[16],"for":[17,211],"reducing":[18],"signaling":[19],"overhead":[20],"and":[21,54,61,84,95,168],"latency.":[22],"To":[23],"deal":[24],"with":[25,51,130,153,174],"much":[26],"more":[27,52,66,186],"active":[28,97,172],"user":[29,214,226],"devices,":[30],"massive":[31,131,197],"multiple-input-multiple-output":[32],"(MIMO)":[33],"introduced":[35],"to":[36,48,56,79,110,141,216],"increase":[37],"system":[39,82,129,219],"capacity.":[40,117],"However,":[41],"length":[43,78,167],"of":[44,99,125,163,171,191,225],"pilot":[45,76,155,165],"sequences":[46],"has":[47],"be":[49],"increased":[50],"users":[53,100,173],"antennas":[55,193],"perform":[57],"joint":[58],"activity":[59,147],"detection":[60,148],"channel":[62,151,176],"estimation":[63,152],"(JADCE),":[64],"occupying":[65],"radio":[67],"resource.":[68],"Thus":[69],"there":[70],"trade-off":[73],"sequence":[77,166],"maximize":[80,217],"capacity,":[83],"other":[85],"parameters":[86,114],"such":[87],"as":[88],"base":[90],"station":[91],"(BS)":[92],"antenna":[93],"number":[94,170,190,224],"rate":[98],"also":[101],"influence":[102,115],"optimization":[104,162],"results.":[105],"Therefore,":[106],"it":[107],"necessary":[109],"explore":[111],"how":[112],"these":[113],"Toward":[118],"this":[119,121,201],"end,":[120],"paper":[122,159,202],"conducts":[123],"simulations":[124],"single-cell":[127],"MIMO.":[132],"It":[133],"firstly":[134],"shows":[135],"that":[136,182],"capacity":[138,184,220],"loss":[139],"compared":[140],"granted":[142],"mainly":[144],"comes":[145],"from":[146],"rather":[149],"than":[150,188],"non-orthogonal":[154],"sequences.":[156],"Then":[157],"investigates":[160],"different":[175],"assumptions.":[177],"A":[178],"noteworthy":[179],"result":[180],"grows":[185],"slowly":[187],"BS":[192],"does":[194],"MIMO":[198],"regime.":[199],"Additionally,":[200],"proposes":[203],"modified":[205],"approximate":[206],"message":[207],"passing":[208],"(AMP)":[209],"algorithm":[210],"multi-antenna":[213],"situations,":[215],"by":[221],"adjusting":[222],"antennas.":[227]},"counts_by_year":[{"year":2023,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
