Results 11 to 20 of about 1,236,123 (244)

Cascaded channel decoupling based solution for RIS regulation matrix [PDF]

open access: yesIntelligent and Converged Networks, 2023
This article presents a pioneering solution to address the challenges of reconfigurable intelligent surface (RIS), employing a cascaded channel decoupling strategy.
Yajun Zhao
doaj   +2 more sources

Distributed deep learning with RIS grouping for accurate cascaded channel estimation [PDF]

open access: yesAIP Advances
Reconfigurable Intelligent Surface (RIS) panels are envisioned as a key technology for sixth-generation (6G) wireless networks, providing a cost-effective means to enhance coverage and spectral efficiency.
Saifur Rahman   +8 more
doaj   +3 more sources

OTA Testing for Massive MIMO Devices Using Cascaded APM Networks and Channel Emulators

open access: yesInternational Journal of Antennas and Propagation, 2019
This paper proposes an over-the-air (OTA) testing setup for millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) equipment using cascaded amplitude and phase modulation (APM) network and channel emulator. Compared with the existing test
Lijian Xin   +3 more
doaj   +2 more sources

Processing ultrafast optical signals in broadband telecom systems by means of cascaded quadratic nonlinearities [PDF]

open access: yes, 2006
Quadratic optical nonlinearities offer several attractive features for the implementation of ultra-fast, low-noise and transparent telecom devices.
David Richardson   +13 more
core   +1 more source

Cascaded channel estimation technique for massive MIMO relay system [PDF]

open access: yes, 2018
© Published under licence by IOP Publishing Ltd. This paper concerns with the cascaded channel estimation of massive multiple-input multiple-output (MIMO) relay system.
Zang, Z., Ling, Y.L.D., Chiong, Raymond
core   +2 more sources

Time-Frequency Based Channel Estimation for High-Mobility OFDM Systems—Part II: Cooperative Relaying Case

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
We consider the estimation of time-varying channels for Cooperative Orthogonal Frequency Division Multiplexing (CO-OFDM) systems. In the next generation mobile wireless communication systems, significant Doppler frequency shifts are expected the channel ...
Erol Önen   +2 more
doaj   +2 more sources

Stochastic Bioimpedance-Based Channel Model of the Human Body for Galvanic Coupling

open access: yesJournal of Electrical Bioimpedance, 2021
Human body communication (HBC) uses the human body as the channel to transfer data. Extensive work has been done to characterize the human body channel for different HBC techniques and scenarios. However, statistical channel bioimpedance characterisation
Roopnarine Aaron, Rocke Sean A.
doaj   +1 more source

Min-Entropy Leakage of Channels in Cascade [PDF]

open access: yes, 2012
Theories of quantitative information flow offer an attractive framework for analyzing confidentiality in practical systems, which often cannot avoid "small" leaks of confidential information. Recently there has been growing interest in the theory of min-entropy leakage, which measures uncertainty based on a random variable's vulnerability to being ...
Barbara Espinoza, Geoffrey Smith 0001
openaire   +2 more sources

Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES) [PDF]

open access: yes, 2013
Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES) has been proposed to solve the problem of poor heat transfer during heat exchange process, which is caused by unavoidable decrease of temperature differences. This paper conducts a theoretical
Zhao, Changying   +3 more
core   +1 more source

All-optical pulse retiming based on quadratic cascading in a periodically poled lithium niobate waveguide [PDF]

open access: yes, 2010
We demonstrate an all-optical technique for the elimination of timing jitter in short pulse transmission systems. The technique relies on pulse pre-shaping followed by optical switching in a periodically poled lithium niobate waveguide via cascaded ...
Gallo, K.   +5 more
core   +2 more sources

Home - About - Disclaimer - Privacy