Efficient OFDM channel estimation for realistic band-limited and non-sample-spaced channels
In this paper, we propose computationally efficient channel estimation methods to minimize energy leakage which is caused by non-sample-spaced channels as well as band-limited OFDM signal with virtual subcarriers. The energy leakage effect mainly resulted from conventional channel estimation methods...
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| Veröffentlicht in: | Signal processing 2010-06, Vol.90 (6), p.1768-1778 |
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| container_title | Signal processing |
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| creator | Im, Se-Bin Choi, Hyung-Jin |
| description | In this paper, we propose computationally efficient channel estimation methods to minimize energy leakage which is caused by non-sample-spaced channels as well as band-limited OFDM signal with virtual subcarriers. The energy leakage effect mainly resulted from conventional channel estimation methods which do not utilize channel statistics information for low complexity such as DFT-based estimation and correlation error cancellation (CEC). The proposed methods solve the problem through a modified non-ideal correlation function which is derived by expanded DFT. Simple analyses and simulation results verify that the proposed methods can achieve MSE performance close to that of optimal LMMSE estimation with sufficiently low complexity. |
| doi_str_mv | 10.1016/j.sigpro.2009.11.015 |
| format | Article |
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The energy leakage effect mainly resulted from conventional channel estimation methods which do not utilize channel statistics information for low complexity such as DFT-based estimation and correlation error cancellation (CEC). The proposed methods solve the problem through a modified non-ideal correlation function which is derived by expanded DFT. Simple analyses and simulation results verify that the proposed methods can achieve MSE performance close to that of optimal LMMSE estimation with sufficiently low complexity.</description><identifier>ISSN: 0165-1684</identifier><identifier>EISSN: 1872-7557</identifier><identifier>DOI: 10.1016/j.sigpro.2009.11.015</identifier><identifier>CODEN: SPRODR</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Channels ; Complexity ; Computational efficiency ; Correlation ; Detection, estimation, filtering, equalization, prediction ; Energy leakage ; Exact sciences and technology ; Information, signal and communications theory ; Leakage ; Mathematical analysis ; Multiplexing ; Non-sample-spaced channel ; OFDM channel estimation ; Optimization ; Signal and communications theory ; Signal, noise ; Statistics ; Telecommunications and information theory ; Virtual subcarrier</subject><ispartof>Signal processing, 2010-06, Vol.90 (6), p.1768-1778</ispartof><rights>2009 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c369t-11dfb66162f77601c332c6b55a4c56bdcab76c0d15dd827ed8844ab6f9fc37f73</citedby><cites>FETCH-LOGICAL-c369t-11dfb66162f77601c332c6b55a4c56bdcab76c0d15dd827ed8844ab6f9fc37f73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0165168409004782$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22804764$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Im, Se-Bin</creatorcontrib><creatorcontrib>Choi, Hyung-Jin</creatorcontrib><title>Efficient OFDM channel estimation for realistic band-limited and non-sample-spaced channels</title><title>Signal processing</title><description>In this paper, we propose computationally efficient channel estimation methods to minimize energy leakage which is caused by non-sample-spaced channels as well as band-limited OFDM signal with virtual subcarriers. 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Simple analyses and simulation results verify that the proposed methods can achieve MSE performance close to that of optimal LMMSE estimation with sufficiently low complexity.</description><subject>Applied sciences</subject><subject>Channels</subject><subject>Complexity</subject><subject>Computational efficiency</subject><subject>Correlation</subject><subject>Detection, estimation, filtering, equalization, prediction</subject><subject>Energy leakage</subject><subject>Exact sciences and technology</subject><subject>Information, signal and communications theory</subject><subject>Leakage</subject><subject>Mathematical analysis</subject><subject>Multiplexing</subject><subject>Non-sample-spaced channel</subject><subject>OFDM channel estimation</subject><subject>Optimization</subject><subject>Signal and communications theory</subject><subject>Signal, noise</subject><subject>Statistics</subject><subject>Telecommunications and information theory</subject><subject>Virtual subcarrier</subject><issn>0165-1684</issn><issn>1872-7557</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLAzEQgIMoWKv_wEMugpesmX0k24sgtVWh0ouePIRsHpqym12TVfDfm7LFo6cZhm9eH0KXQDOgwG52WXTvQ-iznNJFBpBRqI7QDGqeE15V_BjNElYRYHV5is5i3FFKoWB0ht5W1jrljB_xdn3_jNWH9N602MTRdXJ0vce2DzgY2bpUUriRXpPWdW40Gqcc-96TKLuhNSQOUqXqYUY8RydWttFcHOIcva5XL8tHstk-PC3vNkQVbDESAG0bxoDllnNGQRVFrlhTVbJUFWu0kg1nimqotK5zbnRdl6VsmF1YVXDLizm6nuYmBZ9f6XLRuahM20pv-q8ogHEoIGcFJLScUBX6GIOxYgjpz_AjgIq9S7ETk0uxdykARHKZ2q4OG2RUsrVBeuXiX2-e17TkrEzc7cSl7823M0HEvdskxQWjRqF79_-iX9TRjMM</recordid><startdate>20100601</startdate><enddate>20100601</enddate><creator>Im, Se-Bin</creator><creator>Choi, Hyung-Jin</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SC</scope><scope>7SP</scope><scope>8FD</scope><scope>JQ2</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope></search><sort><creationdate>20100601</creationdate><title>Efficient OFDM channel estimation for realistic band-limited and non-sample-spaced channels</title><author>Im, Se-Bin ; Choi, Hyung-Jin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c369t-11dfb66162f77601c332c6b55a4c56bdcab76c0d15dd827ed8844ab6f9fc37f73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Applied sciences</topic><topic>Channels</topic><topic>Complexity</topic><topic>Computational efficiency</topic><topic>Correlation</topic><topic>Detection, estimation, filtering, equalization, prediction</topic><topic>Energy leakage</topic><topic>Exact sciences and technology</topic><topic>Information, signal and communications theory</topic><topic>Leakage</topic><topic>Mathematical analysis</topic><topic>Multiplexing</topic><topic>Non-sample-spaced channel</topic><topic>OFDM channel estimation</topic><topic>Optimization</topic><topic>Signal and communications theory</topic><topic>Signal, noise</topic><topic>Statistics</topic><topic>Telecommunications and information theory</topic><topic>Virtual subcarrier</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Im, Se-Bin</creatorcontrib><creatorcontrib>Choi, Hyung-Jin</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Computer and Information Systems Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><jtitle>Signal processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Im, Se-Bin</au><au>Choi, Hyung-Jin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Efficient OFDM channel estimation for realistic band-limited and non-sample-spaced channels</atitle><jtitle>Signal processing</jtitle><date>2010-06-01</date><risdate>2010</risdate><volume>90</volume><issue>6</issue><spage>1768</spage><epage>1778</epage><pages>1768-1778</pages><issn>0165-1684</issn><eissn>1872-7557</eissn><coden>SPRODR</coden><abstract>In this paper, we propose computationally efficient channel estimation methods to minimize energy leakage which is caused by non-sample-spaced channels as well as band-limited OFDM signal with virtual subcarriers. 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| fulltext | fulltext |
| identifier | ISSN: 0165-1684 |
| ispartof | Signal processing, 2010-06, Vol.90 (6), p.1768-1778 |
| issn | 0165-1684 1872-7557 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Channels Complexity Computational efficiency Correlation Detection, estimation, filtering, equalization, prediction Energy leakage Exact sciences and technology Information, signal and communications theory Leakage Mathematical analysis Multiplexing Non-sample-spaced channel OFDM channel estimation Optimization Signal and communications theory Signal, noise Statistics Telecommunications and information theory Virtual subcarrier |
| title | Efficient OFDM channel estimation for realistic band-limited and non-sample-spaced channels |
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