RF Beamforming and Subcarrier Allocation Using Beam Squint in mmWave Systems
In a multi-user wideband millimeter wave (mmWave) communication system, the existing works optimize the hybrid precoder by assuming a priori subcarrier allocation. However, the beam squint effect in mmWave affects the gain over the subcarriers differently for different beam steer directions. Thus, t...
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| Veröffentlicht in: | IEEE wireless communications letters 2022-04, Vol.11 (4), p.678-682 |
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| creator | Varshney, Nancy De, Swades |
| description | In a multi-user wideband millimeter wave (mmWave) communication system, the existing works optimize the hybrid precoder by assuming a priori subcarrier allocation. However, the beam squint effect in mmWave affects the gain over the subcarriers differently for different beam steer directions. Thus, the design of radio frequency (RF) precoder and subcarrier allocation are intertwined. Based on this observation, in this letter we propose a sub-array hybrid precoder design wherein we jointly estimate the RF precoder and subcarrier allocation and then design the baseband precoder. Our numerical results demonstrate the benefits of the proposed strategy compared to the existing approach wherein subcarrier allocation precedes the RF and baseband precoder design. |
| doi_str_mv | 10.1109/LWC.2021.3137482 |
| format | Article |
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However, the beam squint effect in mmWave affects the gain over the subcarriers differently for different beam steer directions. Thus, the design of radio frequency (RF) precoder and subcarrier allocation are intertwined. Based on this observation, in this letter we propose a sub-array hybrid precoder design wherein we jointly estimate the RF precoder and subcarrier allocation and then design the baseband precoder. Our numerical results demonstrate the benefits of the proposed strategy compared to the existing approach wherein subcarrier allocation precedes the RF and baseband precoder design.</description><identifier>ISSN: 2162-2337</identifier><identifier>EISSN: 2162-2345</identifier><identifier>DOI: 10.1109/LWC.2021.3137482</identifier><identifier>CODEN: IWCLAF</identifier><language>eng</language><publisher>Piscataway: IEEE</publisher><subject>Array signal processing ; Baseband ; Beam squint ; Beamforming ; Communications systems ; millimeter wave (mmWave) ; Millimeter wave communication ; Millimeter waves ; OFDM ; Radio frequency ; Resource management ; RF precoder ; sub-array hybrid precoder ; subcarrier allocation ; Subcarriers ; Wideband</subject><ispartof>IEEE wireless communications letters, 2022-04, Vol.11 (4), p.678-682</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c291t-6f023d9d22c5ae45b11d21a39ebd7b8875d71f5e4947a4c383f91777002304b33</citedby><cites>FETCH-LOGICAL-c291t-6f023d9d22c5ae45b11d21a39ebd7b8875d71f5e4947a4c383f91777002304b33</cites><orcidid>0000-0001-8493-7674 ; 0000-0003-3979-1025</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9659804$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>315,781,785,797,27929,27930,54763</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/9659804$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Varshney, Nancy</creatorcontrib><creatorcontrib>De, Swades</creatorcontrib><title>RF Beamforming and Subcarrier Allocation Using Beam Squint in mmWave Systems</title><title>IEEE wireless communications letters</title><addtitle>LWC</addtitle><description>In a multi-user wideband millimeter wave (mmWave) communication system, the existing works optimize the hybrid precoder by assuming a priori subcarrier allocation. 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Our numerical results demonstrate the benefits of the proposed strategy compared to the existing approach wherein subcarrier allocation precedes the RF and baseband precoder design.</description><subject>Array signal processing</subject><subject>Baseband</subject><subject>Beam squint</subject><subject>Beamforming</subject><subject>Communications systems</subject><subject>millimeter wave (mmWave)</subject><subject>Millimeter wave communication</subject><subject>Millimeter waves</subject><subject>OFDM</subject><subject>Radio frequency</subject><subject>Resource management</subject><subject>RF precoder</subject><subject>sub-array hybrid precoder</subject><subject>subcarrier allocation</subject><subject>Subcarriers</subject><subject>Wideband</subject><issn>2162-2337</issn><issn>2162-2345</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kNFLwzAQh4MoOObeBV8CPnfmkrRJHudwKhQE59hjSNtUMtZ2S1ph_70pG8vLBe773XEfQo9A5gBEveTb5ZwSCnMGTHBJb9CEQkYTynh6e_0zcY9mIexIfBkBCnKC8u8VfrWmqTvfuPYXm7bC66EojffOerzY77vS9K5r8SaM_ZHF6-Pg2h67FjfN1vxZvD6F3jbhAd3VZh_s7FKnaLN6-1l-JPnX--dykSclVdAnWU0oq1RFaZkay9MCoKJgmLJFJQopRVoJqFPLFReGl0yyWoEQgsQY4QVjU_R8nnvw3XGwode7bvBtXKlpFs-XSmUQKXKmSt-F4G2tD941xp80ED1q01GbHrXpi7YYeTpHnLX2iqssVZJw9g8G-maG</recordid><startdate>20220401</startdate><enddate>20220401</enddate><creator>Varshney, Nancy</creator><creator>De, Swades</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| ispartof | IEEE wireless communications letters, 2022-04, Vol.11 (4), p.678-682 |
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| subjects | Array signal processing Baseband Beam squint Beamforming Communications systems millimeter wave (mmWave) Millimeter wave communication Millimeter waves OFDM Radio frequency Resource management RF precoder sub-array hybrid precoder subcarrier allocation Subcarriers Wideband |
| title | RF Beamforming and Subcarrier Allocation Using Beam Squint in mmWave Systems |
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