Simultaneous wireless information and power transfer transmitting architecture based on asynchronous space-time-coding digital metasurface [Invited]

Zhang, Qi; Dai, Jun; Wang, Si Ran; Zhou, Qun Yan; Tang, Wankai; Wang, K. P.; Zhang, Peng; Liu, Shuo; Li, Long; Cheng, Qiang; Cui, Tie Jun

doi:10.3788/col202321.080005

Cited by 5 publications

(2 citation statements)

References 47 publications

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“…Secondly, this asynchrony problem may affect the system control performance because the control algorithm may not be able to control the system accurately [3][4], which may affect the stability and reliability of the system. At this stage, the main problems faced by the asynchronous information fusion of the AC/DC screen branch sensors include the following aspects, firstly, the sensor data synchronization, because the frequency and phase of the data collected by each sensor may be different, it is necessary to find a way to synchronize them [5][6], in order to ensure the accuracy and comparability of the data. Next is the design of data fusion algorithm, which needs to design an effective data fusion algorithm that can extract valuable information from multiple sensors and eliminate noise and interference in the data.…”

Section: Introductionmentioning

confidence: 99%

Privacy-preserving asynchronous information fusion method for AC and DC screen branch circuit sensors

Liu,

Luo,

Fei

et al. 2024

Fourth International Conference on Sensors and Information Technology (ICSI 2024)

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Due to the nonlinear property of asynchronous information between sensors, it is difficult to effectively control the data loss problem when fusing them, therefore, we propose a privacy-oriented fusion method for the asynchronous information of AC and DC screen tributary sensors. The asynchronous information characteristics of the AC/DC screen branch sensors are analyzed in terms of timestamp deviation, data consistency, data noise and interference, data discontinuity and data uncertainty, etc. With the help of nonlinear equations describing the asynchronous information of the AC/DC screen branch sensors, the original asynchronous information is fused and filtered in a recursive form, and the state vector estimates and covariance values of the asynchronous information collected by the AC/DC screen branch sensors are fused with the help of the RBF neural network. Then, the estimated values of state vector and covariance matrix are calculated in the RBF neural network to perform interactive multi-model fusion on the asynchronous information queue. In the test results, the data loss rate is stabilized within 3.0%.

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Section: Introductionmentioning

confidence: 99%

Privacy-preserving asynchronous information fusion method for AC and DC screen branch circuit sensors

Liu,

Luo,

Fei

et al. 2024

Fourth International Conference on Sensors and Information Technology (ICSI 2024)

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“…Qi et al propose an innovative simultaneous wireless information and power transfer (SWIPT) transmitting architecture based on an asynchronous space-time-coding digital metasurface (ASTCM) [7] . This creative approach has the potential to significantly impact wireless communications and the Internet of Things (IoT).…”

mentioning

confidence: 99%

Editorial of special issue on spatiotemporal optical fields and time-varying optical materials

Wan,

Chen,

Cao

2023

Chin. Opt. Lett.

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Fully Breaking Entanglement of Multiple Harmonics for Space‐ and Frequency‐Division Multiplexing Wireless Applications via Space‐Time‐Coding Metasurface

Luo,

Zhang,

Tai

et al. 2024

Advanced Science

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Harmonic generation and utilization are significant topics in nonlinear science. Although the progress in the microwave region has been expedited by the development of time‐modulated metasurfaces, one major issue of these devices is the strong entanglement of multiple harmonics, leading to criticism of their use in frequency‐division multiplexing (FDM) applications. Previous studies have attempted to overcome this limitation, but they suffer from designing complexity or insufficient controlling capability. Here a new space‐time‐coding metasurface (STCM) is proposed to independently and precisely synthesize not only the phases but also the amplitudes of various harmonics. This promising feature is successfully demonstrated in wireless space‐ and frequency‐division multiplexing experiments, where modulated and unmodulated signals are simultaneously transmitted via different harmonics using a shared STCM. To illustrate the advantages, binary frequency shift keying (BFSK) and quadrature phase shift keying (QPSK) modulation schemes are respectively implemented. Behind the intriguing functionality, the mechanism of the space‐time coding strategy and the analytical designing method are elaborated, which are validated numerically and experimentally. It is believed that the achievements can potentially propel the time‐vary metasurfaces in the next‐generation wireless applications.

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Simultaneous wireless information and power transfer transmitting architecture based on asynchronous space-time-coding digital metasurface [Invited]

Cited by 5 publications

References 47 publications

Privacy-preserving asynchronous information fusion method for AC and DC screen branch circuit sensors

Privacy-preserving asynchronous information fusion method for AC and DC screen branch circuit sensors

Editorial of special issue on spatiotemporal optical fields and time-varying optical materials

Fully Breaking Entanglement of Multiple Harmonics for Space‐ and Frequency‐Division Multiplexing Wireless Applications via Space‐Time‐Coding Metasurface

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