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Hakkeon Lee, Insik Jung, Jehyun Heo, and Daesik Hong, "Exploiting Intentional Time-domain Offset in Downlink Multicarrier NOMA systems", IEEE Wireless Communications Letters, Apr. 2021
[IEEE Wireless Commun. Lett.]
조회 10364
Status : | Published |
---|---|
Date : | 2021-04 |
Title : | Exploiting Intentional Time-domain Offset in Downlink Multicarrier NOMA systems |
Authors : | Hakkeon Lee, Insik Jung, Jehyun Heo, and Daesik Hong |
Journal : | IEEE Wireless Communications Letters |
Abstract : | This letter proposes a novel time-asynchronous non-orthogonal multiple access (TA-NOMA) in downlink multicarrier systems. TA-NOMA applies an intentional time offset to control interference between multi-users and to improve spectral efficiency. We first propose a transceiver design for TA-NOMA, and analyze a novel type of interference caused by the intentional time offset. Based on the analysis, a singular value decomposition (SVD)-based pre-processing scheme is proposed. Numerical results show that the proposed TA-NOMA with pre-processing has a superior spectral efficiency compared with conventional power-domain NOMA. Another remarkable feature is that TA-NOMA does not require any user pairing. |
URL : | https://ieeexplore.ieee.org/document/9410600 |
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