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Atmospheric turbulence poses a significant challenge to free-space measurement-device-independent quantum key distribution (FSO MDI-QKD) by inducing polarization decoherence and depolarization, which degrade the secret key rate (SKR). In…

量子物理 · 物理学 2025-09-03 Heyang Peng , Seid Koudia , Symeon Chatzinotas

The outage probability performance of a dual-hop amplify-and-forward selective relaying system with global relay selection is analyzed for Nakagami-$m$ fading channels in the presence of multiple interferers at both the relays and the…

网络与互联网体系结构 · 计算机科学 2014-10-07 Kezhi Wang , Yunfei Chen , Marco Di Renzo

We analyze the secrecy performance of a two-hop mixed radio frequency (RF)/underwater wireless optical communication (UWOC) system using a decode-and-forward (DF) relay. All RF and UWOC links are modeled by the $\alpha-\mu$ and…

信息论 · 计算机科学 2020-09-02 Yi Lou , Ruofan Sun , Julian Cheng , Donghu Nie , Gang Qiao

The phase-locked loop (PLL) used in the doubly fed induction generator (DFIG) can cause frequency coupling phenomena, which will give negative resistance characteristics ofthe DFIG at low frequency, resulting in stability issues under weak…

系统与控制 · 电气工程与系统科学 2023-07-20 Xiaoling Xiong , Bochen Luo , Longcan Li , Ziming Sun , Frede Blaabjerg

In this paper, the performance of a binary phase shift keyed random time-hopping impulse radio system with pulse-based polarity randomization is analyzed. Transmission over frequency-selective channels is considered and the effects of…

信息论 · 计算机科学 2009-11-11 Sinan Gezici , Hisashi Kobayashi , H. Vincent Poor , Andreas F. Molisch

In this work, performance of a multi-antenna multiuser unmanned aerial vehicle (UAV) assisted terrestrial-satellite communication system over mixed free space optics (FSO)/ radio frequency (RF) channels is analyzed. Downlink transmission…

信号处理 · 电气工程与系统科学 2021-09-14 Praveen Kumar Singya , Mohamed-Slim Alouini

RFQ with a harmonic higher order quadrupole mode is studied. Assuming that we superpose a higher order mode with twice the frequency of the fundamental mode, a sawtooth waveform is approximated. In such a case, the bunching function is…

加速器物理 · 物理学 2007-05-23 Y. Iwashita

This paper investigates the impacts of Inter-Channel Interference (ICI) effects on a shallow underwater acoustic (UWA) orthogonal frequency-division multiplexing (OFDM) communication system. Considering both the turbulence of the water…

信息论 · 计算机科学 2021-01-07 Do Viet Ha , Tien Hoa Nguyen , Van Duc Nguyen

We analyze theoretically the decoherence of two interacting electrons in a double self-assembled quantum dot due to a random telegraph noise. For this purpose we have examined the pure dephasing rate by evaluating the decoherence factor.…

介观与纳米尺度物理 · 物理学 2014-03-03 A. Ayachi , W. Ben Chouikha , S. Jaziri , R. Bennaceur

In this paper, we develop a tractable analytical framework for a three-dimensional (3D) indoor terahertz (THz) communication system to theoretically assess the impact of the pointing error on its coverage performance. Specifically, we model…

信号处理 · 电气工程与系统科学 2026-01-30 Zhifeng Tang , Nan Yang , Xiangyun Zhou , Salman Durrani , Markku Juntti , Josep Miquel Jornet

Multi-antenna relays and intelligent reflecting surfaces (IRSs) have been utilized to construct favorable channels to improve the performance of wireless systems. A common feature between relay systems and IRS-aided systems is the two-hop…

信息论 · 计算机科学 2024-02-07 Zeyan Zhuang , Xin Zhang , Dongfang Xu , Shenghui Song

Time-division-duplexing massive multiple-input multiple-output (MIMO) systems estimate the channel state information (CSI) by leveraging the uplink-downlink channel reciprocity, which is no longer valid when the mismatch arises from the…

信息论 · 计算机科学 2020-10-01 Rongjiang Nie , Li Chen , Nan Zhao , Yunfei Chen , Weidong Wang , Xianbin Wang

Although terahertz (THz) communications can provide mobile broadband services, it usually has a large path loss and is vulnerable to antenna misalignment. This significantly degrades the reception reliability. To address this issue, the…

信息论 · 计算机科学 2022-09-29 Ziyang Song , Zheng Shi , Qingping Dou , Guanghua Yang , Yunfei Li , Shaodan Ma

We suggest a scheme to probe critical phenomena at a quantum phase transition (QPT) using the quantum correlation of two photonic modes simultaneously coupled to a critical system. As an experimentally accessible physical implementation, a…

量子物理 · 物理学 2009-12-30 Qing Ai , Ying-Dan Wang , Guilu Long , C. P. Sun

In this manuscript, two novel multi-hop relay-assisted hybrid Free Space Optical / Radio Frequency (FSO / RF) communication systems are presented and compared. In these structures, RF and FSO links, at each hop, are parallel and send data…

信号处理 · 电气工程与系统科学 2018-11-21 Mohammad Ali Amirabadi

A two-phonon system with lowest-order coupling of form $Q_RQ_{IR}^2$ is studied by perturbation method, and analytic results for both phonon displacements and frequencies are obtained. The frequency renormalization of infrared (IR) active…

材料科学 · 物理学 2026-05-19 Yijie Zeng

We study the potential employment of improper Gaussian signaling (IGS) in full-duplex relaying (FDR) with non-negligible residual self-interference (RSI) under Nakagami- m fading. IGS is recently shown to outperform traditional proper…

Reconfigurable intelligent surfaces (RISs) empowered high-frequency (HF) wireless systems are expected to become the supporting pillar for several reliability and data rate hungry applications. Such systems are, however, sensitive to…

Optical reconfigurable intelligent surface (ORIS) is an emerging technology that can achieve reconfigurable optical propagation environments by precisely adjusting signal's reflection and shape through a large number of passive reflecting…

信号处理 · 电气工程与系统科学 2022-01-24 Haibo Wang , Zaichen Zhang , Bingcheng Zhu , Yidi Zhang

The appearance of sixth-generation networks has resulted in the proposal of several solutions to tackle signal loss. One of these solutions is the utilization of reconfigurable intelligent surfaces (RIS), which can reflect or refract…