{"id":"https://openalex.org/W2105634625","doi":"https://doi.org/10.1002/ett.4460130506","title":"Capacity optimisation in MC\u2010CDMA systems","display_name":"Capacity optimisation in MC\u2010CDMA systems","publication_year":2002,"publication_date":"2002-09-01","ids":{"openalex":"https://openalex.org/W2105634625","doi":"https://doi.org/10.1002/ett.4460130506","mag":"2105634625"},"language":"en","primary_location":{"id":"doi:10.1002/ett.4460130506","is_oa":false,"landing_page_url":"https://doi.org/10.1002/ett.4460130506","pdf_url":null,"source":{"id":"https://openalex.org/S4393917101","display_name":"European Transactions on Telecommunications","issn_l":"1124-318X","issn":["1124-318X","1541-8251"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"European Transactions on Telecommunications","raw_type":"journal-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/A5111916654","display_name":"Elena Costa","orcid":null},"institutions":[{"id":"https://openalex.org/I1325886976","display_name":"Siemens (Germany)","ror":"https://ror.org/059mq0909","country_code":"DE","type":"company","lineage":["https://openalex.org/I1325886976"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Elena Costa","raw_affiliation_strings":["Siemens AG, ICM N PG SP RC, D-81359 Munich, Germany","Siemens AG, ICM N PG SP RC, D\u201081359 Munich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Siemens AG, ICM N PG SP RC, D-81359 Munich, Germany","institution_ids":["https://openalex.org/I1325886976"]},{"raw_affiliation_string":"Siemens AG, ICM N PG SP RC, D\u201081359 Munich, Germany","institution_ids":["https://openalex.org/I1325886976"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5074320996","display_name":"Harald Haas","orcid":"https://orcid.org/0000-0001-9705-2701"},"institutions":[{"id":"https://openalex.org/I1325886976","display_name":"Siemens (Germany)","ror":"https://ror.org/059mq0909","country_code":"DE","type":"company","lineage":["https://openalex.org/I1325886976"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Harald Haas","raw_affiliation_strings":["Siemens AG, ICM N PG SP RC, D-81359 Munich, Germany","Siemens AG, ICM N PG SP RC, D\u201081359 Munich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Siemens AG, ICM N PG SP RC, D-81359 Munich, Germany","institution_ids":["https://openalex.org/I1325886976"]},{"raw_affiliation_string":"Siemens AG, ICM N PG SP RC, D\u201081359 Munich, Germany","institution_ids":["https://openalex.org/I1325886976"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020422377","display_name":"Egon Schulz","orcid":"https://orcid.org/0000-0002-2208-8336"},"institutions":[{"id":"https://openalex.org/I1325886976","display_name":"Siemens (Germany)","ror":"https://ror.org/059mq0909","country_code":"DE","type":"company","lineage":["https://openalex.org/I1325886976"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Egon Schulz","raw_affiliation_strings":["Siemens AG, ICM N PG SP RC, D-81359 Munich, Germany","Siemens AG, ICM N PG SP RC, D\u201081359 Munich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Siemens AG, ICM N PG SP RC, D-81359 Munich, Germany","institution_ids":["https://openalex.org/I1325886976"]},{"raw_affiliation_string":"Siemens AG, ICM N PG SP RC, D\u201081359 Munich, Germany","institution_ids":["https://openalex.org/I1325886976"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5045359152","display_name":"Alessio Filippi","orcid":null},"institutions":[{"id":"https://openalex.org/I1325886976","display_name":"Siemens (Germany)","ror":"https://ror.org/059mq0909","country_code":"DE","type":"company","lineage":["https://openalex.org/I1325886976"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Alessio Filippi","raw_affiliation_strings":["Siemens AG, ICM N PG SP RC, D-81359 Munich, Germany","Siemens AG, ICM N PG SP RC, D\u201081359 Munich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Siemens AG, ICM N PG SP RC, D-81359 Munich, Germany","institution_ids":["https://openalex.org/I1325886976"]},{"raw_affiliation_string":"Siemens AG, ICM N PG SP RC, D\u201081359 Munich, Germany","institution_ids":["https://openalex.org/I1325886976"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5020422377","https://openalex.org/A5045359152","https://openalex.org/A5074320996","https://openalex.org/A5111916654"],"corresponding_institution_ids":["https://openalex.org/I1325886976"],"apc_list":null,"apc_paid":null,"fwci":1.1486,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.82245707,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"13","issue":"5","first_page":"455","last_page":"463"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10575","display_name":"Wireless Communication Networks Research","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T10575","display_name":"Wireless Communication Networks Research","score":1.0,"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"}},{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9997000098228455,"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/T11409","display_name":"Advanced Wireless Network Optimization","score":0.9994000196456909,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.8083974123001099},{"id":"https://openalex.org/keywords/code-division-multiple-access","display_name":"Code division multiple access","score":0.6859656572341919},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6613254547119141},{"id":"https://openalex.org/keywords/throughput","display_name":"Throughput","score":0.5910364985466003},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5702820420265198},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.522020161151886},{"id":"https://openalex.org/keywords/multiplexing","display_name":"Multiplexing","score":0.4678545594215393},{"id":"https://openalex.org/keywords/process","display_name":"Process (computing)","score":0.46594440937042236},{"id":"https://openalex.org/keywords/channel-capacity","display_name":"Channel capacity","score":0.4606902599334717},{"id":"https://openalex.org/keywords/component","display_name":"Component (thermodynamics)","score":0.4485152065753937},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.44706207513809204},{"id":"https://openalex.org/keywords/basis","display_name":"Basis (linear algebra)","score":0.44146865606307983},{"id":"https://openalex.org/keywords/function","display_name":"Function (biology)","score":0.43251723051071167},{"id":"https://openalex.org/keywords/minimum-mean-square-error","display_name":"Minimum mean square error","score":0.42400646209716797},{"id":"https://openalex.org/keywords/genetic-algorithm","display_name":"Genetic algorithm","score":0.41462498903274536},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.2360861599445343},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.21776235103607178},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.18447065353393555},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.10788363218307495},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.09686291217803955}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.8083974123001099},{"id":"https://openalex.org/C47696715","wikidata":"https://www.wikidata.org/wiki/Q233394","display_name":"Code division multiple access","level":2,"score":0.6859656572341919},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6613254547119141},{"id":"https://openalex.org/C157764524","wikidata":"https://www.wikidata.org/wiki/Q1383412","display_name":"Throughput","level":3,"score":0.5910364985466003},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5702820420265198},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.522020161151886},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.4678545594215393},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.46594440937042236},{"id":"https://openalex.org/C97744766","wikidata":"https://www.wikidata.org/wiki/Q870845","display_name":"Channel capacity","level":3,"score":0.4606902599334717},{"id":"https://openalex.org/C168167062","wikidata":"https://www.wikidata.org/wiki/Q1117970","display_name":"Component (thermodynamics)","level":2,"score":0.4485152065753937},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.44706207513809204},{"id":"https://openalex.org/C12426560","wikidata":"https://www.wikidata.org/wiki/Q189569","display_name":"Basis (linear algebra)","level":2,"score":0.44146865606307983},{"id":"https://openalex.org/C14036430","wikidata":"https://www.wikidata.org/wiki/Q3736076","display_name":"Function (biology)","level":2,"score":0.43251723051071167},{"id":"https://openalex.org/C90652560","wikidata":"https://www.wikidata.org/wiki/Q11091747","display_name":"Minimum mean square error","level":3,"score":0.42400646209716797},{"id":"https://openalex.org/C8880873","wikidata":"https://www.wikidata.org/wiki/Q187787","display_name":"Genetic algorithm","level":2,"score":0.41462498903274536},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.2360861599445343},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.21776235103607178},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.18447065353393555},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.10788363218307495},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.09686291217803955},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C97355855","wikidata":"https://www.wikidata.org/wiki/Q11473","display_name":"Thermodynamics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C78458016","wikidata":"https://www.wikidata.org/wiki/Q840400","display_name":"Evolutionary biology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1002/ett.4460130506","is_oa":false,"landing_page_url":"https://doi.org/10.1002/ett.4460130506","pdf_url":null,"source":{"id":"https://openalex.org/S4393917101","display_name":"European Transactions on Telecommunications","issn_l":"1124-318X","issn":["1124-318X","1541-8251"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"European Transactions on Telecommunications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1555154718","https://openalex.org/W2098285910","https://openalex.org/W2105877470","https://openalex.org/W2107690964","https://openalex.org/W2130094887","https://openalex.org/W2138986309","https://openalex.org/W2149587304","https://openalex.org/W2154766970","https://openalex.org/W2158486699","https://openalex.org/W2158646012","https://openalex.org/W2160417185","https://openalex.org/W2786750725","https://openalex.org/W4248676392","https://openalex.org/W4301253858"],"related_works":["https://openalex.org/W2548963335","https://openalex.org/W2159941915","https://openalex.org/W2358604001","https://openalex.org/W2542407877","https://openalex.org/W2103590590","https://openalex.org/W2157655641","https://openalex.org/W2356491405","https://openalex.org/W2026213324","https://openalex.org/W1492853130","https://openalex.org/W2270625065"],"abstract_inverted_index":{"Abstract":[0],"A":[1],"novel":[2],"efficient":[3],"algorithm":[4,33,56,93,129],"is":[5],"proposed":[6],"for":[7],"the":[8,29,32,35,38,41,46,52,55,72,92,97,100,121,128,134,137,153,157,162],"optimisation":[9,53,98],"of":[10,28,37,66,74,99,120,136,139,156,161],"capacity":[11],"assignment":[12,36],"in":[13,51,104,152],"a":[14,61,75,106,111,116,148],"MC\u2010CDMA":[15],"system":[16,48,159],"with":[17,43,60],"an":[18,26,88],"additional":[19],"frequency":[20],"division":[21],"multiplexing":[22],"component.":[23],"Based":[24],"on":[25,71],"estimate":[27],"frequency\u2010selective":[30],"channel,":[31],"optimises":[34],"sub\u2010bands":[39],"to":[40,45],"users":[42],"respect":[44],"overall":[47,158],"capacity.":[49],"Moreover,":[50],"process":[54],"can":[57,124],"efficiently":[58],"cope":[59],"given":[62],"prioritisation":[63],"among":[64],"classes":[65],"user\u2010services,":[67],"i.e.":[68],"user\u2010groups,":[69],"identified":[70],"basis":[73],"certain":[76],"demand,":[77],"such":[78],"as":[79,133],"throughput,":[80],"tolerable":[81],"delay":[82],"and/or":[83],"error":[84],"rate":[85],"etc.":[86],"From":[87],"initial":[89,114],"random":[90],"solution,":[91],"proceeds":[94],"progressively":[95],"towards":[96],"target":[101],"function,":[102],"yielding,":[103],"general,":[105],"local":[107],"optimum.":[108],"By":[109],"trying":[110],"few":[112],"different":[113],"solutions":[115],"very":[117,149],"good":[118],"approximation":[119],"global":[122],"optimum":[123],"be":[125],"obtained.":[126],"Futhermore,":[127],"complexity":[130],"grows":[131],"only":[132],"square":[135],"number":[138],"carriers.":[140],"Simulation":[141],"results":[142],"show":[143],"that":[144],"its":[145],"application":[146],"provides":[147],"significant":[150],"gain":[151],"downlink":[154],"performance":[155],"or":[160],"prioritised":[163],"user\u2010groups.":[164]},"counts_by_year":[],"updated_date":"2026-05-21T06:26:12.895304","created_date":"2025-10-10T00:00:00"}