{"id":"https://openalex.org/W2142779001","doi":"https://doi.org/10.1109/wcnc.2009.4917749","title":"Improved Schemes for Subcarrier, Bit, and Power Allocation in Multiuser OFDM Systems","display_name":"Improved Schemes for Subcarrier, Bit, and Power Allocation in Multiuser OFDM Systems","publication_year":2009,"publication_date":"2009-04-01","ids":{"openalex":"https://openalex.org/W2142779001","doi":"https://doi.org/10.1109/wcnc.2009.4917749","mag":"2142779001"},"language":"en","primary_location":{"id":"doi:10.1109/wcnc.2009.4917749","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wcnc.2009.4917749","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE Wireless Communications and Networking Conference","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/A5079832121","display_name":"Wei-Cheng Pao","orcid":null},"institutions":[{"id":"https://openalex.org/I22265921","display_name":"National Central University","ror":"https://ror.org/00944ve71","country_code":"TW","type":"education","lineage":["https://openalex.org/I22265921"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Wei-Cheng Pao","raw_affiliation_strings":["Department of Communication Engineering, National Central University, Taiwan","Dept. of Communication Engineering, National Central University, Taiwan, R.O.C"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Communication Engineering, National Central University, Taiwan","institution_ids":["https://openalex.org/I22265921"]},{"raw_affiliation_string":"Dept. of Communication Engineering, National Central University, Taiwan, R.O.C","institution_ids":["https://openalex.org/I22265921"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102972003","display_name":"Yung\u2010Fang Chen","orcid":"https://orcid.org/0000-0002-4519-5169"},"institutions":[{"id":"https://openalex.org/I22265921","display_name":"National Central University","ror":"https://ror.org/00944ve71","country_code":"TW","type":"education","lineage":["https://openalex.org/I22265921"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Yung-Fang Chen","raw_affiliation_strings":["Department of Communication Engineering, National Central University, Taiwan","Dept. of Communication Engineering, National Central University, Taiwan, R.O.C"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Communication Engineering, National Central University, Taiwan","institution_ids":["https://openalex.org/I22265921"]},{"raw_affiliation_string":"Dept. of Communication Engineering, National Central University, Taiwan, R.O.C","institution_ids":["https://openalex.org/I22265921"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5038337274","display_name":"Jia-Hong Lai","orcid":null},"institutions":[{"id":"https://openalex.org/I22265921","display_name":"National Central University","ror":"https://ror.org/00944ve71","country_code":"TW","type":"education","lineage":["https://openalex.org/I22265921"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Jia-Hong Lai","raw_affiliation_strings":["Department of Communication Engineering, National Central University, Taiwan","Dept. of Communication Engineering, National Central University, Taiwan, R.O.C"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Communication Engineering, National Central University, Taiwan","institution_ids":["https://openalex.org/I22265921"]},{"raw_affiliation_string":"Dept. of Communication Engineering, National Central University, Taiwan, R.O.C","institution_ids":["https://openalex.org/I22265921"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.6103,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.73546146,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"17","issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11409","display_name":"Advanced Wireless Network 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/T11409","display_name":"Advanced Wireless Network 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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9976999759674072,"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/T10575","display_name":"Wireless Communication Networks Research","score":0.9962999820709229,"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/subcarrier","display_name":"Subcarrier","score":0.9360180497169495},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6624137759208679},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.582735002040863},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.5589653849601746},{"id":"https://openalex.org/keywords/heuristic","display_name":"Heuristic","score":0.5159383416175842},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.43636754155158997},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.21556901931762695},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.11317792534828186}],"concepts":[{"id":"https://openalex.org/C198329298","wikidata":"https://www.wikidata.org/wiki/Q586358","display_name":"Subcarrier","level":4,"score":0.9360180497169495},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6624137759208679},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.582735002040863},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.5589653849601746},{"id":"https://openalex.org/C173801870","wikidata":"https://www.wikidata.org/wiki/Q201413","display_name":"Heuristic","level":2,"score":0.5159383416175842},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.43636754155158997},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.21556901931762695},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.11317792534828186},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/wcnc.2009.4917749","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wcnc.2009.4917749","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE Wireless Communications and Networking Conference","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.41999998688697815,"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1874568214","https://openalex.org/W2031066187","https://openalex.org/W2106749358","https://openalex.org/W2121921168","https://openalex.org/W2129566716","https://openalex.org/W2137760878","https://openalex.org/W2160173487","https://openalex.org/W2336259629","https://openalex.org/W6639247119","https://openalex.org/W6679299086"],"related_works":["https://openalex.org/W2172159377","https://openalex.org/W2091769028","https://openalex.org/W2351865055","https://openalex.org/W2020731358","https://openalex.org/W2098618074","https://openalex.org/W2055131418","https://openalex.org/W1501039677","https://openalex.org/W2166250390","https://openalex.org/W2019909929","https://openalex.org/W2306672848"],"abstract_inverted_index":{"In":[0,74],"this":[1,75,160],"paper,":[2,76],"the":[3,61,94,107,110,119,131,150,165,171,177,186,194,198,206,211,224],"subcarrier,":[4],"bit,":[5],"and":[6,21,36,48,116,218],"power":[7,14],"allocation":[8,24,79,95,133,152],"problem":[9],"for":[10,52,60,93,113],"minimizing":[11],"total":[12],"transmit":[13],"in":[15,159,164],"multiuser":[16],"OFDM":[17],"systems":[18],"is":[19,26,85,99,102,208,219],"considered":[20],"a":[22],"near-optimal":[23],"scheme":[25],"developed.":[27],"The":[28,201],"heuristic":[29,214],"algorithms":[30],"based":[31],"on":[32],"initial":[33,62,89,121,173],"subcarrier":[34,78,90,132,151,174],"assignment":[35,63,91,122,175],"iterative":[37,140,178],"improvement":[38,141,179],"two":[39],"steps":[40],"have":[41],"been":[42],"proposed":[43,81,124,135,154,213],"by":[44,82,125,136,155],"Wong":[45,126],"et":[46,50,127],"al.":[47,51],"Chen":[49],"real-time":[53],"services":[54],"[4-5].":[55],"However,":[56],"an":[57,88],"appropriate":[58],"method":[59,92,123],"should":[64],"be":[65],"selected":[66],"or":[67],"designed":[68],"to":[69,105,143,192,221],"offer":[70],"even":[71],"better":[72,145,172,182],"performance.":[73,146,183],"one":[77],"algorithm":[80,134,153,191,217],"Zhang":[83,137,156],"[6]":[84],"adopted":[86],"as":[87,197],"problem.":[96],"Its":[97],"advantage":[98],"that":[100,170,205,222],"there":[101],"no":[103],"need":[104],"pre-determine":[106],"number":[108],"of":[109,149,223],"assigned":[111],"subcarriers":[112],"each":[114],"user,":[115],"it":[117,168],"outperforms":[118],"constructive":[120],"al..":[128],"We":[129,184],"adopt":[130],"along":[138],"with":[139,176,210],"schemes":[142,180],"obtain":[144],"Detailed":[147],"discussions":[148],"are":[157],"presented":[158],"paper.":[161],"As":[162],"indicated":[163],"simulation":[166,202],"results,":[167],"reveals":[169],"achieves":[181],"utilize":[185],"linear":[187],"integer":[188],"programming-based":[189],"branch-and-bound":[190],"provide":[193],"optimum":[195,225],"solution":[196],"performance":[199,207],"bound.":[200],"results":[203],"show":[204],"improved":[209],"new":[212],"polynomial":[215],"time":[216],"close":[220],"solution.":[226]},"counts_by_year":[{"year":2013,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}