Search Results for author: Shuhai Tang

Found 8 papers, 0 papers with code

Improved Label Design for Timing Synchronization in OFDM Systems against Multi-path Uncertainty

no code implementations19 Jul 2023 Chaojin Qing, Shuhai Tang, Na Yang, Chuangui Rao, Jiafan Wang

Then, to guarantee the correctness of labeling, we exploit the priori information of line-of-sight (LOS) to form a LOS-aided labeling.

Metric Learning-Based Timing Synchronization by Using Lightweight Neural Network

no code implementations1 Jul 2023 Chaojin Qing, Na Yang, Shuhai Tang, Chuangui Rao, Jiafan Wang, Hui Lin

However, multi-path uncertainty corrupts the TS correctness, making OFDM systems suffer from a severe inter-symbol-interference (ISI).

Metric Learning

ELM-based Timing Synchronization for OFDM Systems by Exploiting Computer-aided Training Strategy

no code implementations30 Jun 2023 Mintao Zhang, Shuhai Tang, Chaojin Qing, Na Yang, Xi Cai, Jiafan Wang

Due to the implementation bottleneck of training data collection in realistic wireless communications systems, supervised learning-based timing synchronization (TS) is challenged by the incompleteness of training data.

Cascaded ELM-based Joint Frame Synchronization and Channel Estimation over Rician Fading Channel with Hardware Imperfections

no code implementations24 Feb 2023 Chaojin Qing, Chuangui Rao, Shuhai Tang, Na Yang, Jiafan Wang

Due to the interdependency of frame synchronization (FS) and channel estimation (CE), joint FS and CE (JFSCE) schemes are proposed to enhance their functionalities and therefore boost the overall performance of wireless communication systems.

CNN-based Timing Synchronization for OFDM Systems Assisted by Initial Path Acquisition in Frequency Selective Fading Channel

no code implementations6 Dec 2022 Chaojin Qing, Na Yang, Shuhai Tang, Chuangui Rao, Jiafan Wang, Jinliang Chen

Due to the narrowed search region of TS, the CNN-based TS effectively locates the accurate TS point and inspires us to construct a lightweight network in terms of computational complexity and online running time.

Lightweight 1-D CNN-based Timing Synchronization for OFDM Systems with CIR Uncertainty

no code implementations14 Sep 2022 Chaojin Qing, Shuhai Tang, Xi Cai, Jiafan Wang

Numerical results reflect that the proposed 1-D CNN-based TS method effectively improves the TS accuracy, reduces the computational complexity and processing delay, and possesses a good generalization performance against the CIR uncertainty.

Label Design-based ELM Network for Timing Synchronization in OFDM Systems with Nonlinear Distortion

no code implementations28 Jul 2021 Chaojin Qing, Shuhai Tang, Chuangui Rao, Qing Ye, Jiafan Wang, Chuan Huang

Due to the nonlinear distortion in Orthogonal frequency division multiplexing (OFDM) systems, the timing synchronization (TS) performance is inevitably degraded at the receiver.

ELM-based Frame Synchronization in Nonlinear Distortion Scenario Using Superimposed Training

no code implementations27 Mar 2021 Chaojin Qing, Wang Yu, Shuhai Tang, Chuangui Rao, Jiafan Wang

To avoid the occupation of bandwidth resources and overcome the difficulty of nonlinear distortion, an extreme learning machine (ELM)-based network is introduced into the superimposed training-based FS with nonlinear distortion.

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