{"id":"https://openalex.org/W2156653469","doi":"https://doi.org/10.1109/pimrc.2009.5449945","title":"Refinement of MIMO limited-feedback using second best codeword","display_name":"Refinement of MIMO limited-feedback using second best codeword","publication_year":2009,"publication_date":"2009-09-01","ids":{"openalex":"https://openalex.org/W2156653469","doi":"https://doi.org/10.1109/pimrc.2009.5449945","mag":"2156653469"},"language":"en","primary_location":{"id":"doi:10.1109/pimrc.2009.5449945","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc.2009.5449945","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio 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/A5033701076","display_name":"Karol Schober","orcid":null},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"K. Schober","raw_affiliation_strings":["Helsinki University of Technology, Finland"],"affiliations":[{"raw_affiliation_string":"Helsinki University of Technology, Finland","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036110624","display_name":"Risto Wichman","orcid":"https://orcid.org/0000-0002-5261-5037"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R. Wichman","raw_affiliation_strings":["Helsinki University of Technology, Finland"],"affiliations":[{"raw_affiliation_string":"Helsinki University of Technology, Finland","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5038842923","display_name":"Tommi Koivisto","orcid":null},"institutions":[{"id":"https://openalex.org/I2738502077","display_name":"Nokia (Finland)","ror":"https://ror.org/04pkc8m17","country_code":"FI","type":"company","lineage":["https://openalex.org/I2738502077"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"T. Koivisto","raw_affiliation_strings":["Nokia Group, Nokia Devices Research and Development, Finland"],"affiliations":[{"raw_affiliation_string":"Nokia Group, Nokia Devices Research and Development, Finland","institution_ids":["https://openalex.org/I2738502077"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5033701076"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.16897079,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"54","issue":null,"first_page":"2529","last_page":"2533"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9998999834060669,"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":0.9998999834060669,"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/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/T11248","display_name":"Advanced Power Amplifier Design","score":0.9983000159263611,"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/codebook","display_name":"Codebook","score":0.9532971978187561},{"id":"https://openalex.org/keywords/code-word","display_name":"Code word","score":0.8138251900672913},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.7149865031242371},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.7011276483535767},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.6790522933006287},{"id":"https://openalex.org/keywords/bitstream","display_name":"Bitstream","score":0.6322357654571533},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.584761917591095},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5770596861839294},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.5485242605209351},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5321504473686218},{"id":"https://openalex.org/keywords/interpolation","display_name":"Interpolation (computer graphics)","score":0.4810105264186859},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.4770576059818268},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.39216041564941406},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3387572169303894},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3212297856807709},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.31276530027389526},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.17445409297943115},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.15876725316047668}],"concepts":[{"id":"https://openalex.org/C127759330","wikidata":"https://www.wikidata.org/wiki/Q637416","display_name":"Codebook","level":2,"score":0.9532971978187561},{"id":"https://openalex.org/C153207627","wikidata":"https://www.wikidata.org/wiki/Q863873","display_name":"Code word","level":3,"score":0.8138251900672913},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7149865031242371},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.7011276483535767},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.6790522933006287},{"id":"https://openalex.org/C136695289","wikidata":"https://www.wikidata.org/wiki/Q415568","display_name":"Bitstream","level":3,"score":0.6322357654571533},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.584761917591095},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5770596861839294},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.5485242605209351},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5321504473686218},{"id":"https://openalex.org/C137800194","wikidata":"https://www.wikidata.org/wiki/Q11713455","display_name":"Interpolation (computer graphics)","level":3,"score":0.4810105264186859},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.4770576059818268},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.39216041564941406},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3387572169303894},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3212297856807709},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.31276530027389526},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.17445409297943115},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.15876725316047668},{"id":"https://openalex.org/C126042441","wikidata":"https://www.wikidata.org/wiki/Q1324888","display_name":"Frame (networking)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/pimrc.2009.5449945","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc.2009.5449945","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.190.1636","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.190.1636","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://sites.google.com/site/tkksigresearch/Home/publications/publications-2009/Schober_WPMC09.pdf?attredirects=0","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1966907097","https://openalex.org/W1987186857","https://openalex.org/W2009990945","https://openalex.org/W2109062787","https://openalex.org/W2110948144","https://openalex.org/W2130521103","https://openalex.org/W2130833059","https://openalex.org/W2143839989","https://openalex.org/W2145720856","https://openalex.org/W2147631863","https://openalex.org/W2161515500","https://openalex.org/W2164110223"],"related_works":["https://openalex.org/W2123156148","https://openalex.org/W2369939250","https://openalex.org/W2355032504","https://openalex.org/W1588525449","https://openalex.org/W2050865889","https://openalex.org/W2167568384","https://openalex.org/W2117054468","https://openalex.org/W2116541631","https://openalex.org/W2145406111","https://openalex.org/W2514205366"],"abstract_inverted_index":{"This":[0],"paper":[1],"presents":[2],"a":[3,72],"new":[4],"low":[5],"complexity":[6],"method":[7,62,79],"of":[8,59],"providing":[9],"improved":[10],"channel":[11],"state":[12],"information":[13],"at":[14],"the":[15,25,32,36,60],"transmitter":[16],"within":[17],"closed-loop":[18],"MIMO":[19],"systems.":[20],"We":[21],"propose":[22],"to":[23,31,68,71],"feedback":[24],"second":[26],"best":[27,33],"codeword":[28],"in":[29,52],"addition":[30],"codeword.":[34],"At":[35],"transmitter,":[37],"these":[38],"two":[39],"precoding":[40],"codewords":[41,65],"are":[42],"interpolated":[43],"using":[44],"geodesic.":[45],"The":[46,57],"optimal":[47],"interpolation":[48],"parameter":[49],"is":[50,66],"derived":[51],"closed-form":[53],"for":[54],"single-stream":[55],"transmission.":[56],"performance":[58],"proposed":[61],"with":[63,74],"b-bit":[64],"shown":[67],"be":[69],"close":[70],"codebook":[73],"2b-bit":[75],"codewords,":[76],"while":[77],"our":[78],"has":[80],"significantly":[81],"lower":[82],"computational":[83],"complexity.":[84]},"counts_by_year":[{"year":2016,"cited_by_count":1}],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}
