DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Hyoji | ko |
dc.contributor.author | Gil, Gye-Tae | ko |
dc.contributor.author | Lee, Yong Hoon | ko |
dc.date.accessioned | 2019-08-19T10:20:15Z | - |
dc.date.available | 2019-08-19T10:20:15Z | - |
dc.date.created | 2019-07-02 | - |
dc.date.created | 2019-07-02 | - |
dc.date.issued | 2019-07 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON COMMUNICATIONS, v.67, no.7, pp.5139 - 5152 | - |
dc.identifier.issn | 0090-6778 | - |
dc.identifier.uri | http://hdl.handle.net/10203/264275 | - |
dc.description.abstract | We 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.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Two-Step Approach to Time-Domain Channel Estimation for Wideband Millimeter Wave Systems With Hybrid Architecture | - |
dc.type | Article | - |
dc.identifier.wosid | 000476750300046 | - |
dc.identifier.scopusid | 2-s2.0-85069771117 | - |
dc.type.rims | ART | - |
dc.citation.volume | 67 | - |
dc.citation.issue | 7 | - |
dc.citation.beginningpage | 5139 | - |
dc.citation.endingpage | 5152 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON COMMUNICATIONS | - |
dc.identifier.doi | 10.1109/TCOMM.2019.2906873 | - |
dc.contributor.localauthor | Lee, Yong Hoon | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Millimeter wave communication | - |
dc.subject.keywordAuthor | hybrid MIMO-OFDM | - |
dc.subject.keywordAuthor | wideband channel estimation | - |
dc.subject.keywordAuthor | compressed sensing | - |
dc.subject.keywordPlus | MASSIVE-MIMO | - |
dc.subject.keywordPlus | DECOMPOSITION | - |
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