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Joohyun Son, Hakkeon Lee, Insik Jung, and Daesik Hong, "Exploiting Intentional Frequency Offset in NOMA-OFDM Systems: From Basic to Practical", IEEE Transactions on Wireless Communications, 2023
[IEEE Trans. Wireless Commun.]
조회 12898
Status : | Published |
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Date : | 2023-02 |
Title : | Exploiting Intentional Frequency Offset in NOMA-OFDM Systems: From Basic to Practical |
Authors : | Joohyun Son, Hakkeon Lee, Insik Jung, and Daesik Hong |
Journal : | IEEE Transactions on Wireless Communications |
Abstract : | This paper investigates an asynchronous non-orthogonal multiple access (NOMA) scheme that intentionally generates a frequency offset between users in the orthogonal frequency division multiplexing (OFDM) system. We begin by proposing frequency asynchronous NOMA (FA-NOMA) as a basic system. The characteristics and challenges of FA-NOMA are then described. However, the challenges hinder the utilization of FA-NOMA in a practical environment. To further improve and utilize FA-NOMA in practice, we propose a novel sub-band filtered FA-NOMA (SBFA-NOMA) system. We also provide a new transceiver to implement SBFA-NOMA. Simulation results show that the proposed system can achieve performance improvement via gains in received power and degrees of freedom (DoF) compared to the power-domain NOMA (P-NOMA) system. |
URL : | https://ieeexplore.ieee.org/document/10056854 |
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