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We have developed a new laser-based time calibration system for highly segmented scintillator counters like the MEG II pixelated Timing Counter (pTC), consisting of 512-centimeter scale scintillator counters read out by silicon…

We present a rotated polarization directional coupler (RPDC) on a photonic chip. We demonstrate a double-track approach to modify the distribution of refractive index between adjacent tracks and form a single waveguide with arbitrary…

量子物理 · 物理学 2018-12-21 Ci-Yu Wang , Jun Gao , Xian-Min Jin

The main role of the ITER Radial Neutron Camera (RNC) diagnostic is to measure in real-time the plasma neutron emissivity profile at high peak count rates for a time duration up to 500 s. Due to the unprecedented high performance conditions…

In digital signal processing time-frequency transforms are used to analyze time-varying signals with respect to their spectral contents over time. Apart from the commonly used short-time Fourier transform, other methods exist in literature,…

信号处理 · 电气工程与系统科学 2021-01-19 Stefan Scholl

Positron emission tomography (PET) serves as an essential tool for diagnosis of encephalopathy and brain science research. However, it suffers from the limited choice of tracers. Nowadays, with the wide application of PET imaging in…

The search for a compatible application of memristor-CMOS logic gates has remained elusive, as the data density benefits are offset by slow switching speeds and resistive dissipation. Active microdisplays typically prioritize pixel density…

新兴技术 · 计算机科学 2021-04-22 Xiaoyuan Wang , Zhiru Wu , Pengfei Zhou , Herbert H. C. Iu , Jason K. Eshraghian , Sung Mo Kang

Terahertz (THz) integrated sensing and communication (ISAC) is a promising interdisciplinary technology that realizes simultaneously transmitting Terabit-per-second (Tbps) and millimeter-level accurate environment or human activity sensing.…

信号处理 · 电气工程与系统科学 2023-02-28 Yongzhi Wu , Chong Han , Zhi Chen

For the upgrade of the inner tracker of the BESIII spectrometer, planned for 2018, a lightweight tracker based on an innovative Cylindrical Gas Electron Multiplier (CGEM) detector is now under development. The analogue readout of the CGEM…

Discrete Cosine Transform (DCT) can be used instead of conventional Discrete Fourier Transform (DFT) for the Orthogonal Frequency Division Multiplexing (OFDM) construction, which offers many advantages. In this paper, the…

信息论 · 计算机科学 2023-11-28 Khaled Ramadan

We conceive a novel channel estimation and data detection scheme for OTFS-modulated faster-than-Nyquist (FTN) transmission over doubly selective fading channels, aiming for enhancing the spectral efficiency and Doppler resilience. The…

信号处理 · 电气工程与系统科学 2026-01-21 Zekun Hong , Shinya Sugiura , Chao Xu , Lajos Hanzo

This paper introduces the Fast Cross-Correlation (FCC) method for Time Difference of Arrival (TDoA) Estimation for pairs of microphones on a small aperture microphone array. FCC relies on low-rank decomposition and exploits symmetry in even…

信号处理 · 电气工程与系统科学 2023-03-13 François Grondin , Marc-Antoine Maheux , Jean-Samuel Lauzon , Jonathan Vincent , François Michaud

Affine Frequency Division Multiplexing (AFDM) has emerged as a promising chirp-based multicarrier technology for high-speed communication systems. To fully exploit the diversity gain offered by AFDM, accurate channel estimation is…

信息论 · 计算机科学 2026-03-23 Ruizhe Wang , Cunhua Pan , Hong Ren , Haisu Wu , Jiangzhou Wang

Precise diagnostic on the electron beam parameters is a very valuable tool and essential in the operation of synchrotron light sources. One possible option is to employ the emitted synchrotron radiation for non-destructive measurements. A…

加速器物理 · 物理学 2025-12-08 Miriam Brosi , Johann Schmand , Jonas Breunlin , Francesca Curbis

This paper proposes a high-precision time measurement method based on digital frequency-domain phase-fitting (DFPF) by using the digitized nuclear pulses. The averaging effect inherent in the frequency-domain cross-correlation and…

仪器与探测器 · 物理学 2025-04-17 Jianjun Wang , Zhaohui Bu , Zhao Wang , Jincheng Xu , Liguo Zhou , Qibin Zheng

Orthogonal time frequency space (OTFS) is a promising candidate waveform for the next generation wireless communication systems. OTFS places data in the delay-Doppler (DD) domain, which simplifies channel estimation in highmobility…

信号处理 · 电气工程与系统科学 2023-05-25 Sanoopkumar P. S. , Stephen McWade , Arman Farhang

This paper introduces a novel Token-and-Duration Transducer (TDT) architecture for sequence-to-sequence tasks. TDT extends conventional RNN-Transducer architectures by jointly predicting both a token and its duration, i.e. the number of…

音频与语音处理 · 电气工程与系统科学 2023-05-31 Hainan Xu , Fei Jia , Somshubra Majumdar , He Huang , Shinji Watanabe , Boris Ginsburg

Phase Frequency Detectors (PFDs) are essential components in Phase-Locked Loop (PLL) and Delay-Locked Loop (DLL) systems, responsible for comparing phase and frequency differences and generating up/down signals to regulate charge pumps…

新兴技术 · 计算机科学 2025-08-26 Dhandeep Challagundla , Venkata Krishna Vamsi Sundarapu , Ignatius Bezzam , Riadul Islam

Searches for radio signatures of ultra-high energy neutrinos and cosmic rays could benefit from improved efficiency by using real-time beamforming or correlation triggering. For missions with power limitations, such as the ANITA-3 Antarctic…

Extracting a target source from underdetermined mixtures is challenging for beamforming approaches. Recently proposed time-frequency-bin-wise switching (TFS) and linear combination (TFLC) strategies mitigate this by combining multiple…

音频与语音处理 · 电气工程与系统科学 2026-03-17 Changda Chen , Yichen Yang , Wei Liu , Shoji Makino

The quantitative measurement of energy deposits in particle detectors, particularly in calorimeters, is usually accomplished with the help of Analog-to-Digital converters (ADCs) due to their precision, wide measurement range, and good…

仪器与探测器 · 物理学 2025-08-04 J. Peña-Rodríguez , J. Förtsch , C. Pauly , K. -H. Kampert