{"id":"https://openalex.org/W2141130855","doi":"https://doi.org/10.1109/icc.2008.947","title":"Full Diversity Spreading code for Downlink Space-Time-Frequency Spreading CDMA","display_name":"Full Diversity Spreading code for Downlink Space-Time-Frequency Spreading CDMA","publication_year":2008,"publication_date":"2008-01-01","ids":{"openalex":"https://openalex.org/W2141130855","doi":"https://doi.org/10.1109/icc.2008.947","mag":"2141130855"},"language":"en","primary_location":{"id":"doi:10.1109/icc.2008.947","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc.2008.947","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 IEEE International Conference on Communications","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/A5111949834","display_name":"Siyang Liu","orcid":null},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"S. Liu","raw_affiliation_strings":["Beijing University of Posts and Telecommunications, Beijing, China","Beijing Univ. of Posts and Telecommun., Beijing"],"affiliations":[{"raw_affiliation_string":"Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Beijing Univ. of Posts and Telecommun., Beijing","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100442810","display_name":"Feifei Wang","orcid":"https://orcid.org/0000-0001-8260-2053"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"F. Wang","raw_affiliation_strings":["Beijing University of Posts and Telecommunications, Beijing, China","Beijing Univ. of Posts and Telecommun., Beijing"],"affiliations":[{"raw_affiliation_string":"Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Beijing Univ. of Posts and Telecommun., Beijing","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078736125","display_name":"Ranran Zhang","orcid":"https://orcid.org/0000-0001-8554-9630"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"R. Zhang","raw_affiliation_strings":["Beijing University of Posts and Telecommunications, Beijing, China","Beijing Univ. of Posts and Telecommun., Beijing"],"affiliations":[{"raw_affiliation_string":"Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Beijing Univ. of Posts and Telecommun., Beijing","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101802239","display_name":"Yachen Wang","orcid":"https://orcid.org/0009-0006-0655-1331"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Y. Wang","raw_affiliation_strings":["Beijing University of Posts and Telecommunications, Beijing, China","Beijing Univ. of Posts and Telecommun., Beijing"],"affiliations":[{"raw_affiliation_string":"Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Beijing Univ. of Posts and Telecommun., Beijing","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5020422392","display_name":"Yuanan Liu","orcid":"https://orcid.org/0000-0002-8076-1904"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Y. Liu","raw_affiliation_strings":["Beijing University of Posts and Telecommunications, Beijing, China","Beijing Univ. of Posts and Telecommun., Beijing"],"affiliations":[{"raw_affiliation_string":"Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Beijing Univ. of Posts and Telecommun., Beijing","institution_ids":["https://openalex.org/I139759216"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5111949834"],"corresponding_institution_ids":["https://openalex.org/I139759216"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.1637798,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"24","issue":null,"first_page":"5048","last_page":"5052"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10575","display_name":"Wireless Communication Networks Research","score":0.9998999834060669,"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":0.9998999834060669,"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":0.9990000128746033,"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/T12042","display_name":"Satellite Communication Systems","score":0.996999979019165,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/code-division-multiple-access","display_name":"Code division multiple access","score":0.8189442157745361},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.526507556438446},{"id":"https://openalex.org/keywords/diversity-scheme","display_name":"Diversity scheme","score":0.5230882167816162},{"id":"https://openalex.org/keywords/near-far-problem","display_name":"Near-far problem","score":0.5168972015380859},{"id":"https://openalex.org/keywords/code","display_name":"Code (set theory)","score":0.5111053586006165},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.49427056312561035},{"id":"https://openalex.org/keywords/hadamard-code","display_name":"Hadamard code","score":0.48804083466529846},{"id":"https://openalex.org/keywords/hadamard-transform","display_name":"Hadamard transform","score":0.42081087827682495},{"id":"https://openalex.org/keywords/spread-spectrum","display_name":"Spread spectrum","score":0.41678786277770996},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.38648685812950134},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.3312695324420929},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2344532310962677},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.17577072978019714},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.17205852270126343},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.1025647521018982}],"concepts":[{"id":"https://openalex.org/C47696715","wikidata":"https://www.wikidata.org/wiki/Q233394","display_name":"Code division multiple access","level":2,"score":0.8189442157745361},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.526507556438446},{"id":"https://openalex.org/C198746922","wikidata":"https://www.wikidata.org/wiki/Q1230593","display_name":"Diversity scheme","level":4,"score":0.5230882167816162},{"id":"https://openalex.org/C89719804","wikidata":"https://www.wikidata.org/wiki/Q6984333","display_name":"Near-far problem","level":3,"score":0.5168972015380859},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.5111053586006165},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.49427056312561035},{"id":"https://openalex.org/C26693338","wikidata":"https://www.wikidata.org/wiki/Q1567339","display_name":"Hadamard code","level":3,"score":0.48804083466529846},{"id":"https://openalex.org/C60292330","wikidata":"https://www.wikidata.org/wiki/Q1014065","display_name":"Hadamard transform","level":2,"score":0.42081087827682495},{"id":"https://openalex.org/C105344744","wikidata":"https://www.wikidata.org/wiki/Q958957","display_name":"Spread spectrum","level":3,"score":0.41678786277770996},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.38648685812950134},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.3312695324420929},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2344532310962677},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.17577072978019714},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.17205852270126343},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.1025647521018982},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icc.2008.947","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc.2008.947","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 IEEE International Conference on Communications","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1971810378","https://openalex.org/W2103769613","https://openalex.org/W2118040894","https://openalex.org/W2145452118","https://openalex.org/W2152989898","https://openalex.org/W2157758160","https://openalex.org/W2165028351","https://openalex.org/W2166787984","https://openalex.org/W2485002209","https://openalex.org/W6677468020"],"related_works":["https://openalex.org/W2136824285","https://openalex.org/W1597034200","https://openalex.org/W2108162790","https://openalex.org/W2962913460","https://openalex.org/W2151734654","https://openalex.org/W2130080030","https://openalex.org/W2513780272","https://openalex.org/W2748053075","https://openalex.org/W2046585484","https://openalex.org/W2765659114"],"abstract_inverted_index":{"Recently":[0],"proposed":[1],"downlink":[2],"space-time-frequency":[3],"spreading":[4,15,35,61],"CDMA":[5],"(STFS-CDMA)":[6],"is":[7,21,69],"investigated":[8],"in":[9,38],"this":[10],"paper.":[11],"By":[12],"analyzing,":[13],"a":[14,59],"code":[16,36,41,45,67],"design":[17],"criterion":[18],"of":[19,34,99,102,105],"it":[20],"derived.":[22],"From":[23],"the":[24,30,52,82,90,97,100,103],"criterion,":[25],"we":[26],"can":[27,48,88],"see":[28],"that":[29],"original":[31],"two":[32],"classes":[33],"adopted":[37],"STFS-CDMA,":[39],"Walsh-Hadamard":[40],"(WHC)":[42],"and":[43,55,77,93],"double-orthogonal":[44],"(DOC),":[46],"both":[47],"not":[49],"always":[50],"achieve":[51],"full":[53,91],"space":[54,92],"frequency":[56,94],"diversity.":[57],"Then,":[58],"novel":[60,83],"code,":[62],"zero":[63],"padded":[64],"rotary":[65],"FFT":[66],"(ZPRFC),":[68],"proposed.":[70],"Compared":[71],"with":[72],"WHC":[73],"coded":[74,79,85],"STFS-CDMA":[75,80,86],"(WHC-STFS-CDMA)":[76],"DOC":[78],"(DOC-STFS-CDMA),":[81],"ZPRFC":[84],"(ZPRFC-STFS-CDMA)":[87],"obtain":[89],"diversity":[95],"at":[96],"cost":[98],"reduction":[101],"number":[104],"supporting":[106],"users.":[107]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
