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The integrated satellite-terrestrial network (ISTN) system has experienced significant growth, offering seamless communication services in remote areas with limited terrestrial infrastructure. However, designing a routing scheme for ISTN is…

网络与互联网体系结构 · 计算机科学 2024-01-19 Yifeng Lyu , Han Hu , Rongfei Fan , Zhi Liu , Jianping An , Shiwen Mao

This paper investigates the optimization of beamforming design in a system with integrated sensing and communication (ISAC), where the base station (BS) sends signals for simultaneous multiuser communication and radar sensing. We aim at…

信息论 · 计算机科学 2022-04-27 Zhenyao He , Wei Xu , Hong Shen , Yongming Huang , Huahua Xiao

In its usual implementation, the Raman amplifier features only one pump carrier frequency. However, pulses with well-separated frequencies can also be Raman amplified while compressed in time. Amplification with frequency-separated pumps is…

等离子体物理 · 物理学 2018-04-04 Ido Barth , Nathaniel J. Fisch

The integration of reconfigurable intelligent surfaces (RIS) and fluid antenna systems (FAS) has attracted considerable attention due to its tremendous potential in enhancing wireless communication performance. However, under fast-fading…

网络与互联网体系结构 · 计算机科学 2025-11-04 Kaining Wang , Bo Yang , Yusheng Lei , Zhiwen Yu , Xuelin Cao , Liang Wang , Bin Guo , George C. Alexandropoulos , Mérouane Debbah , Zhu Han

Stimulated Raman scattering, employing a pump and a Stokes beam, exhibits itself through both the Raman loss observed in the pump beam and the Raman gain in the Stokes beam. This phenomenon finds application in spectroscopy for chemical…

光学 · 物理学 2024-08-13 Minhaeng Cho

This paper investigates robust beamforming for system-centric energy efficiency (EE) optimization in the vehicular integrated sensing and communication (ISAC) system, where the mobility of vehicles poses significant challenges to channel…

信息论 · 计算机科学 2023-10-27 Hanwen Zhang , Haijian Sun , Tianyi He , Weiming Xiang , Rose Qingyang Hu

Reconfigurable intelligent surface (RIS) is a promising technology for future wireless communications due to its capability of optimizing the propagation environments. Nevertheless, in literature, there are few prototypes serving multiple…

信号处理 · 电气工程与系统科学 2024-05-14 Zhibo Zhou , Haifan Yin , Li Tan , Ruikun Zhang , Kai Wang , Yingzhuang Liu

Power system state estimation plays a fundamental and critical role in the energy management system (EMS). To achieve a high performance and accurate system states estimation, a graph computing based distributed state estimation approach is…

分布式、并行与集群计算 · 计算机科学 2020-02-25 Yi Lu , Chen Yuan , Xiang Zhang , Hua Huang , Guangyi Liu , Renchang Dai , Zhiwei Wang

Magnetic induction (MI) based communication and power transfer systems have gained an increased attention in the recent years. Typical applications for these systems lie in the area of wireless charging, near-field communication, and…

信息论 · 计算机科学 2015-08-12 S. Kisseleff , I. F. Akyildiz , W. Gerstacker

We propose a method for increasing the Raman scattering from an ensemble of molecules by up to four orders of magnitude. Our method requires an additional coherent source of IR radiation with the half-frequency of the Stokes shift. This…

量子物理 · 物理学 2019-04-24 V. Yu. Shishkov , E. S. Andrianov , A. A. Pukhov , A. P. Vinogradov , A. A. Lisyansky

We investigate the spatial beam dynamics inside a multimode graded-index fiber under Raman amplification by adopting a semi-analytical variational approach. The variational analysis provides us with four coupled ordinary differential…

光学 · 物理学 2023-06-29 Ashis Paul , Anuj P. Lara , Samudra Roy , Govind P. Agrawal

This paper introduces a unified analytical and optimization framework for fluid antenna system-active reconfigurable intelligent surface (FAS-ARIS) communications in 6G. By combining the port reconfigurability of FAS with the signal…

信号处理 · 电气工程与系统科学 2026-03-23 Hong-Bae Jeon , Kai-Kit Wong , Chan-Byoung Chae

We formulated a closed-form EGN model for nonlinear interference in ultra-wideband optical systems with arbitrary Raman amplification. This model enhanced the CISCO-POLITO-CFM5 performance by introducing a novel contribution attributed to…

信号处理 · 电气工程与系统科学 2024-05-15 Yanchao Jiang , Pierluigi Poggiolini

This paper considers state estimation of linear systems using analog amplify and forwarding with multiple sensors, for both multiple access and orthogonal access schemes. Optimal state estimation can be achieved at the fusion center using a…

信息论 · 计算机科学 2009-06-11 Alex S. Leong , Subhrakanti Dey , Jamie S. Evans

This paper proposes a three-dimensional (3D) geometry-based channel model to accurately represent intelligent reflecting surfaces (IRS)-enhanced integrated sensing and communication (ISAC) networks using rate-splitting multiple access…

信息论 · 计算机科学 2025-01-28 Zhangfeng Ma , Ruichen Zhang , Bo Ai , Zhuxian Lian , Linzhou Zeng , Dusit Niyato

The ability to enhance resonant signals and eliminate the non-resonant background is analyzed for Coherent Anti-Stokes Raman Scattering (CARS). The analysis is done at a specific frequency as well as for broadband excitation using…

量子物理 · 物理学 2015-03-19 Fang Gao , Feng Shuang , JunHui Shi , Herschel Rabitz , HaiFeng Wang , JiXin Cheng

The extension of elastic optical networks (EON) to multi-band transmission (MB-EON) shows promise in enhancing spectral efficiency, throughput, and long-term cost-effectiveness for telecom operators. However, designing MB-EON networks…

We apply the iterative Expectation-Maximization algorithm (EM) to estimate the power spectrum of the CMB from multifrequency microwave maps. In addition, we are also able to provide a reconstruction of the CMB map. By assuming that the…

天体物理学 · 物理学 2009-11-07 E. Martinez-Gonzalez , J. M. Diego , P. Vielva , J. Silk

In this letter, we investigate a coordinated multiple point (CoMP)-aided integrated sensing and communication (ISAC) system that supports multiple users and targets. Multiple base stations (BSs) employ a coordinated power allocation…

信息论 · 计算机科学 2025-03-11 Jianpeng Zou , Zhanfeng Zhong , Jintao Wang , Zheng Shi , Guanghua Yang , Shaodan Ma

This paper explores the energy efficiency (EE) of integrated sensing and communication (ISAC) systems employing massive multiple-input multiple-output (mMIMO) techniques to leverage spatial beamforming gains for both communication and…