ScholarWorks@성균관대학교

초록

To realize next-generation wireless systems, the sub-terahertz (sub-THz) band has been identified as a promising candidate due to its wide bandwidth. As the operating frequency enters the sub-THz range, several challenges arise, including high path loss and aggravated phase noise (PN). This underscores the critical importance of PN estimation in DFT-s-OFDM waveforms, which offer a lower peak-to-average power ratio (PAPR) than CP-OFDM. To the best of our knowledge, existing works focus solely on PN estimation without considering channel estimation. However, separately estimating PN and the channel can degrade overall system reliability, since PN distorts channel estimation, which in turn impairs subsequent PN estimation. To address this problem, we propose a novel joint PN and channel estimation algorithm in DFT-s-OFDM, which has not been previously investigated. Simulation results demonstrate the effectiveness of the proposed method by comparing it against conventional non-joint approaches.

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