Results 61 to 70 of about 3,508 (187)
Secure Decentralized Key Relaying via Random Walks in Dynamic Semi‐Trusted QKD Networks
Advanced Quantum Technologies, Volume 9, Issue 8, August 2026.Quantum Key Distribution (QKD) provides point‐to‐point, information‐theoretically secure session keys, but distance limitations require trusted relays between remote parties. Can quantum keys be relayed without trusting every intermediate node or depending on a central controller?
Sergejs Kozlovičs +3 more
wiley +1 more source
Impact of Common Reflecting and Absorbing Building Materials on THz Multipath Channels. [PDF]
Radio Sci, 2022 Gomez-Ponce J +7 more
europepmc +1 more source
Radio Science, Volume 61, Issue 8, August 2026.Abstract This paper explores the impact of natural phenomena on signal data transmission across various ionospheric communication channels. The study focuses on three primary phenomena: meteor trails prevalent in the middle‐ and lower‐latitude ionosphere, bubble and plume structures observed around the equatorial ionosphere, and magnetic‐storm‐induced ...
I. Bronfman +2 more
wiley +1 more source
Data-Driven and Model-Driven Joint Detection Algorithm for Faster-Than-Nyquist Signaling in Multipath Channels. [PDF]
Sensors (Basel), 2021 Deng X, Bian X, Li M.
europepmc +1 more source
Auroral Amplitude Scintillations Revealed With High‐Rate Scintillation Indices From a GNSS Array
Space Weather, Volume 24, Issue 8, August 2026.Abstract As Global Navigation Satellite Signals pass through the ionosphere, particularly at high latitudes, they can refract and diffract, resulting in a phenomenon known as scintillation. Irregularities of all scale sizes can cause scintillation to occur.
G. Blinstrubas, S. Datta‐Barua
wiley +1 more source
Adaptive Zero-Padding OFDM over Frequency-Selective Multipath Channels
EURASIP Journal on Advances in Signal Processing, 2004 We present a novel bandwidth (BW) efficient orthogonal frequency division multiplexing (OFDM) scheme with adaptive zero-padding (AZP-OFDM) for wireless transmission. Redundancy issues in OFDM based on cyclic prefix (CP), zero-padding (ZP), as well as no
Wang Neng, Blostein Steven D
doaj +1 more source
Assessing GNSS Reflectometry for High‐Latitude 3D Ionospheric Imaging
Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.Abstract This study investigates whether Global Navigation Satellite System Reflectometry (GNSS‐R) measurements from low‐Earth‐orbit (LEO) satellites can improve three‐dimensional (3D) ionospheric electron density imaging, with a focus on high‐latitude regions. Conventional ionospheric tomography is limited by sparse ground‐based receiver coverage over
Brenna Royersmith +2 more
wiley +1 more source
Spatial Dynamics of Indoor Radio Wideband Channels
EURASIP Journal on Wireless Communications and Networking, 2010 The multipath components of superwideband (2–17.2 GHz) nonline-of-sight channel responses measured inside several buildings are stable along sections that are 27 cm long on average with a standard deviation of 16 cm.
Hayar Aawatif +2 more
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Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.Abstract To explore mechanisms of rupture segmentation, we invert coseismic GNSS offsets for the 2025 Mw 7.6 Aomori, Japan earthquake. Our preferred curved‐fault solution images a compact thrust rupture at 25–50 km depth with peak slip ∼2.5 m near 35 km.
Xiaolong Zhang +6 more
wiley +1 more source
MM-LoRa-Mod: A non-coherent LoRa modulation scheme for underwater acoustic communications
Dianxin kexueLoRa (long-range) is an emerging low-power wide-area network technology. Facing challenges such as frequency selective fading multipath channels, existing LoRa schemes are subjected to issues like low data rates and high system complexity.
YU Xiao, XU Weikai, SUN Haixin, LIU Qi
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