Two-Step Approach to Time-Domain Channel Estimation for Wideband Millimeter Wave Systems With Hybrid Architecture

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dc.contributor.authorKim, Hyojiko
dc.contributor.authorGil, Gye-Taeko
dc.contributor.authorLee, Yong Hoonko
dc.date.accessioned2019-08-19T10:20:15Z-
dc.date.available2019-08-19T10:20:15Z-
dc.date.created2019-07-02-
dc.date.created2019-07-02-
dc.date.issued2019-07-
dc.identifier.citationIEEE TRANSACTIONS ON COMMUNICATIONS, v.67, no.7, pp.5139 - 5152-
dc.identifier.issn0090-6778-
dc.identifier.urihttp://hdl.handle.net/10203/264275-
dc.description.abstractWe consider the problem of time domain (TD) channel estimation for wideband millimeter wave systems with a hybrid architecture. TD channel estimators can exploit both angular and delay domain sparsity, and can perform better than frequency domain (FD) estimators exploiting only angular domain sparsity; however, the former usually require a heavier computational load than the latter. To overcome this difficulty, we propose an efficient, two-step TD channel estimator: in the first step, an effective channel incorporated with beamforming, array responses, and pulse shaping is estimated by the least squares (LS) method; in the second, the desired channel is estimated via an orthogonal matching pursuit (OMP) algorithm. It is analytically shown that the proposed two-step method can yield the same outputs as the original single-step TD estimator when an identity pulse shaping matrix and a unitary pilot matrix are employed. The proposed algorithm is simpler to implement than the other estimators based on OMP, because its sensing matrix is block-diagonal. The simulation results demonstrate that complexity reduction of the proposed method is achieved without (or with minor) performance degradation.-
dc.languageEnglish-
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC-
dc.titleTwo-Step Approach to Time-Domain Channel Estimation for Wideband Millimeter Wave Systems With Hybrid Architecture-
dc.typeArticle-
dc.identifier.wosid000476750300046-
dc.identifier.scopusid2-s2.0-85069771117-
dc.type.rimsART-
dc.citation.volume67-
dc.citation.issue7-
dc.citation.beginningpage5139-
dc.citation.endingpage5152-
dc.citation.publicationnameIEEE TRANSACTIONS ON COMMUNICATIONS-
dc.identifier.doi10.1109/TCOMM.2019.2906873-
dc.contributor.localauthorLee, Yong Hoon-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorMillimeter wave communication-
dc.subject.keywordAuthorhybrid MIMO-OFDM-
dc.subject.keywordAuthorwideband channel estimation-
dc.subject.keywordAuthorcompressed sensing-
dc.subject.keywordPlusMASSIVE-MIMO-
dc.subject.keywordPlusDECOMPOSITION-
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