Results 1 to 10 of about 38,925 (285)

Joint Spatial Division and Multiplexing for mm-Wave Channels [PDF]

IEEE Journal on Selected Areas in Communications, 2014
Massive MIMO systems are well-suited for mm-Wave communications, as large arrays can be built with reasonable form factors, and the high array gains enable reasonable coverage even for outdoor communications. One of the main obstacles for using such systems in frequency-division duplex mode, namely the high overhead for the feedback of channel state ...
Adhikary, Ansuman, Safadi, Ebrahim Al, Samimi, Mathew, Wang, Rui, Caire, Giuseppe, Rappaport, Theodore S., Molisch, Andreas F.   +6 more
core   +5 more sources

Spatial-Division Multiplexing Approach for Simultaneous Detection of Fiber-Optic Ball Resonator Sensors: Applications for Refractometers and Biosensors [PDF]

Biosensors, 2022
Fiber-optic ball resonators are an attractive technology for refractive index (RI) sensing and optical biosensing, as they have good sensitivity and allow for a rapid and repeatable manufacturing process.
Madina Shaimerdenova, Takhmina Ayupova, Aliya Bekmurzayeva, Marzhan Sypabekova, Zhannat Ashikbayeva, Daniele Tosi   +5 more
doaj   +4 more sources

Spatial division multiplexing for optical data center networks [PDF]

2018 International Conference on Optical Network Design and Modeling (ONDM), 2018
Emerging mobile and cloud applications drive ever-increasing capacity demands, particularly for short-reach optical communications, where low-cost and low-power solutions are highly required. Spatial division multiplexing (SDM) techniques provide a promising way to scale up the lane count per fiber, while reducing the number of fiber connections and ...
Lin, R., Van Kerrebrouck, Joris, Pang, X., Verplaetse, Michiel, Ozolins, O., Udalcovs, A., Zhang, L., Gan, L., Tang, M., Fu, S., Schatz, R., Westergren, U., Popov, S., Liu, D., Tong, W., De Keulenaer, Timothy, Torfs, Guy, Bauwelinck, Johan, Yin, Xin, Chen, J.   +19 more
openaire   +4 more sources

Convergence of Multidimensional Sensing: A Review of AI-Enhanced Space-Division Multiplexing in Optical Fiber Sensors [PDF]

Sensors
The growing demand for high-fidelity, multi-parameter, distributed sensing in critical domains such as structural health monitoring, oil and gas exploration, and secure perimeter surveillance is pushing traditional optical fiber sensors (OFS) to their ...
Rabiu Imam Sabitu, Amin Malekmohammadi
doaj   +2 more sources

OAM-Based Concentric Spatial Division Multiplexing for Cellular IoT Terminals [PDF]

IEEE Access, 2020
Internet of Things (IoT) is an emerging network that aims to connect massive devices for exchanging information with each other. There have been various IoT access techniques, such as RFID, Blue Tooth, WiFi, LoRa and cellular IoT, in which cellular IoT ...
Rui Chen, Zhengjuan Tian, Hong Zhou, Wen-Xuan Long   +3 more
doaj   +2 more sources

Simultaneous Transmission of Discrete-Variable Quantum Key Distribution and Classical Optical Communication in Few-Mode Fiber [PDF]

Entropy
Based on mode crosstalk theory, this paper develops a spontaneous Raman scattering (SpRS) model for the quantum-classical coexistence system using few-mode fiber (FMF) integrated with wavelength-division multiplexing (WDM) and spatial-division ...
Qi Zhao, Gang Wang, Li Pei, Jianjun Tang, Yuheng Xie, Zhenhua Li, Yang Liu   +6 more
doaj   +2 more sources

Spatial Division Multiplexing for Multiplex Coherent Anti-Stokes Raman Scattering

Journal of Lightwave Technology, 2023
We demonstrate how a narrowband pump and a broadband spectrum can be spatially multiplexed by selective coupling them in two distinct modes of a few-mode microstructure fiber. The first mode carries most of the input pump energy, and experiences spectral broadening.
T. Mansuryan, A. Tonello, K. Krupa, A. Desmouliere, G. Ndong Ntoutoume, V. Sol, C. Lefort, M. Zitelli, M. Ferraro, F. Mangini, Y. Sun, Y. Arosa Lobato, B. Wetzel, S. Wabnitz, V. Couderc   +14 more
openaire   +5 more sources

A Survey on Physical Layer Techniques and Challenges in Underwater Communication Systems

Journal of Marine Science and Engineering, 2023
In the past decades, researchers/scientists have paid attention to the physical layer of underwater communications (UWCs) due to a variety of scientific, military, and civil tasks completed beneath water.
Naveed Ur Rehman Junejo, Mariyam Sattar, Saifullah Adnan, Haixin Sun, Abuzar B. M. Adam, Ahmad Hassan, Hamada Esmaiel   +6 more
doaj   +1 more source

Asynchronous spatial division multiplexing router [PDF]

Microprocessors and Microsystems, 2011
Asynchronous quasi-delay-insensitive (QDI) NoCs have several advantages over their clocked counterparts. Virtual channel (VC) is the most utilized flow control method in asynchronous routers but spatial division multiplexing (SDM) achieves better throughput performance for best-effort traffic than VC.
Song, Wei, Edwards, Doug
openaire   +3 more sources

A Phase-Sensitive Optical Time Domain Reflectometry with Non-Uniform Frequency Multiplexed NLFM Pulse

Sensors, 2023
In the domain of optical fiber distributed acoustic sensing, the persistent challenge of extending sensing distances while concurrently improving spatial resolution and frequency response range has been a complex endeavor.
Zhengyang Li, Yangan Zhang, Xueguang Yuan, Zhenyu Xiao, Yuan Zhang, Yongqing Huang   +5 more
doaj   +1 more source