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A novel single-sideband (SSB) time-modulated technique with 2-bit phase shifters is proposed. The timemodulated module is implemented by adding periodic phase modulation to 2-bit phase shifters, which is simpler without performance loss…

信号处理 · 电气工程与系统科学 2020-10-14 Yanchang Gao , Gang Ni , Kun Wang , Yiqing Liu , Chong He , Ronghong Jin , Xianling Liang

We present a novel cross-band modulation framework that combines 3D modulation in the RF domain with intensity modulation and direct detection in the optical domain, the first such integration to enhance communication reliability. By…

信号处理 · 电气工程与系统科学 2025-03-24 Thrassos K. Oikonomou , Sotiris A. Tegos , Panagiotis D. Diamantoulakis , George K. Karagiannidis

In this paper, we propose two schemes for asynchronous multi-relay two-way relay (MR-TWR) systems in which neither the users nor the relays know the channel state information (CSI). In an MR-TWR system, two users exchange their messages…

信息论 · 计算机科学 2016-10-25 Ahmad Salim , Tolga M. Duman

A polarization switching pulse interleaver is shown to be effective in reducing timing noise due to polarization mode dispersion in time and frequency transfer based on mode-locked lasers and standard single-mode fibres. In closed-loop time…

光学 · 物理学 2025-02-20 Thomas Fordell , Anders E. Wallin , Thomas Lindvall , Kalle Hanhijärvi

Linear and nonlinear distortions in optical communication signals are equalized using an integrated feed-forward Photonic Neural Network (PNN). The PNN is based on a linear stage made of an 8-tap Finite Impulse Response (FIR) filter,…

光学 · 物理学 2025-07-21 Emiliano Staffoli , Elisabetta Ferri , Stefano Gretter , Lorenzo Pavesi

Multi-eigenvalues transmission with information encoded simultaneously in both orthogonal polarizations is experimentally demonstrated. Performance below the HD-FEC limit is demonstrated for 8-bits/symbol 1-GBd signals after transmission up…

信息论 · 计算机科学 2017-08-02 Simone Gaiarin , Auro Michele Perego , Edson Porto da Silva , Francesco Da Ros , Darko Zibar

We introduce a precision polarization scheme for DNN inference that utilizes only very low and very high precision levels, assigning low precision to the majority of network weights and activations while reserving high precision paths for…

机器学习 · 计算机科学 2024-11-12 Dinithi Jayasuriya , Nastaran Darabi , Maeesha Binte Hashem , Amit Ranjan Trivedi

The experimental implementation of the polarization encoding system is presented using weak coherent pulses at a low enough frequency. The optical pulses are generated through intensity modulation at the repetition rate of $10$ pulses/sec…

量子物理 · 物理学 2025-06-04 Zeshan Haider

The use of multidimensional modulations can decrease the energy consumption of optical links. In this paper, we propose and study Mode Vector Modulation (MVM), a generalized polarization modulation scheme for transmission over…

信号处理 · 电气工程与系统科学 2023-03-20 Jaroslaw Kwapisz , Ioannis Roudas , Eric Fink

A device that achieves controllable rotation of the state of polarization by rotating the orientation of the eigenmodes of a waveguide by 45$^{\circ}$ is introduced and analyzed. The device can be implemented using lossless materials on a…

光学 · 物理学 2016-04-20 PoHan Chang , Charles Lin , Amr S. Helmy

In this paper, an algorithm of multiple signal classification (MUSIC) is proposed for two-dimensional (2-D) direction of- arrival (DOA) and polarization estimation of non-circular signal in three-dimensional (3-D) millimeter wave polarized…

信号处理 · 电气工程与系统科学 2017-12-18 Liangtian Wan , Kaihui Liu , Ying-Chang Liang , Tong Zhu

Simple fiber optic communication systems can be implemented using energy modulation of isolated time-limited pulses. Fundamental solitons are one possible solution for such pulses which offer a fundamental advantage: their shape is not…

信号处理 · 电气工程与系统科学 2022-06-23 Youssef Jaffal , Alex Alvarado

Wide-field imaging Mueller polarimetry is a revolutionary, label-free, and non-invasive modality for computer-aided intervention: in neurosurgery it aims to provide visual feedback of white matter fibre bundle orientation from derived…

To fully support vertical industries, 5G and its corresponding channel coding are expected to meet requirements of different applications. However, for applications of 5G and beyond 5G (B5G) such as URLLC, the transmission latency is…

信息论 · 计算机科学 2022-01-11 Xiaohu You , Chuan Zhang , Bin Sheng , Yongming Huang , Chen Ji , Yifei Shen , Wenyue Zhou , Jian Liu

This work aims to identify the relevant physical processes in shaping the intensity and polarization patterns of the solar K I D lines through spectral syntheses, placing particular emphasis on the D2 line. The theoretical Stokes profiles…

太阳与恒星天体物理 · 物理学 2022-08-26 Ernest Alsina Ballester

A coupled dielectric-metal metasurface (CDMM) consisting of amorphous silicon (a-$\textit{Si}$) rings and subwavelength holes in $\textit{Au}$ layer separated by a $\textit{SiO}_{2}$ layer is presented. The design parameters of the CDMM is…

光学 · 物理学 2020-01-08 Arvind Nagarajan , Koen van Erve , Giampiero Gerini

This paper presents a novel three-dimensional (3D) 8-ary noise modulation scheme that introduces a new dimension: the mixture probability of a Mixture of Gaussian (MoG) distribution. This proposed approach utilizes the dimensions of mean…

信号处理 · 电气工程与系统科学 2025-10-03 Hadi Zayyani , Felipe A. P. de Figueiredo , Mohammad Salman , Rausley A. A. de Souza

Polarization splitter-rotators (PSRs) are the key elements to realize on-chip polarization manipulation. Current PSRs on thin film lithium niobate (TFLN) rely on sub-micron gaps to realize modes separation, which increase the difficulties…

光学 · 物理学 2024-02-26 Mengke Wang , Hao Yao , Jiayao Deng , Zhefeng Hu , Tingting Tang , Kaixin Chen

The orthogonal delay-Doppler (DD) division multiplexing(ODDM) modulation has been recently proposed as a promising modulation scheme for next-generation communication systems with high mobility. Despite its benefits, ODDM modulation and…

信号处理 · 电气工程与系统科学 2024-12-24 Yiyan Ma , Akram Shafie , Jinhong Yuan , Guoyu Ma , Zhangdui Zhong , Bo Ai

Conventional optical coherent receivers capture the full electrical field, including amplitude and phase, of a signal waveform by measuring its interference against a stable continuous-wave local oscillator (LO). In optical coherent…

信号处理 · 电气工程与系统科学 2020-06-24 Haoshuo Chen , Nicolas K. Fontaine , Joan M. Gene , Roland Ryf , David T. Neilson , Gregory Raybon