Results 31 to 40 of about 656 (174)
Broadband Hybrid Precoding Scheme Based on Cyclic Delay in Terahertz Communications
IEEE Access, 2021 The terahertz communication system with traditional hybrid precoding structure has the problem of beam diffusion. This problem leads to the serious loss of achievable rate and offsets the performance gain caused by bandwidth increase, so a broadband ...
Lei Xu +4 more
doaj +1 more source
Low complexity hybrid precoding method in mmWave massive MIMO system
Dianxin kexue, 2016 A low-complexity hybrid precoding method was proposed to design the hybrid precoding for mmWave massive MIMO system.Firstly,an initial radio frequency(RF)precoding matrix was constructed based on the singular value decomposition.Then an updated RF matrix
Jianwei XIANG, Xiulan YU, Xiaorong JING
doaj +2 more sources
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram +3 more
wiley +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani +2 more
wiley +1 more source
Adaptive gradient algorithm for hybrid precoding in mmWave MIMO system
Tongxin xuebao, 2021 To reduce the complexity of existing hybrid precoding algorithms based on alternating minimization (AltMin) and online learning via gradient descent with momentum in mmWave MIMO systems, aiming at the single-user scenario, the problem of designing the ...
Yu ZHANG, Zhi ZHANG, Xiaodai DONG
doaj +2 more sources
Hybrid Precoding for Multi-Group Physical Layer Multicasting
CoRR, 2017 Next generation of wireless networks will likely rely on large-scale antenna systems, either in the form of massive multi-input-multi-output (MIMO) or millimeter wave (mmWave) systems. Therefore, the conventional fully-digital precoders are not suitable for physical layer multicasting as they require a dedicated radio frequency chain per antenna ...
Sadeghi, Meysam +2 more
openaire +3 more sources
Rethinking Emotional Labor: AI's Role in Shaping Consumer and Worker Well‐Being
Journal of Consumer Affairs, Volume 60, Issue 2, Summer 2026.ABSTRACT This article offers a commentary on the role of AI‐driven systems in emotional labor and its implications for consumers' well‐being. The central insight is that AI systems can alleviate service providers' emotional burden while providing consistent support, which challenges the notion that only humans can deliver authentic emotional support ...
Wookjae Heo, Sun Young Ahn
wiley +1 more source
Low Complexity Hybrid Precoding for Broadband mmWave Massive MIMO Systems
Advances in Electrical and Computer Engineering, 2018 Hybrid precoding becomes a candidate for Millimeter wave (mmWave) massive MIMO (Multiple-Input and Multiple-Output) systems because it can extremely reduce power consumption and high costs.
HUANG, Y., LIU, C., SONG, Y.
doaj +1 more source
Hybrid MMSE Precoding and Combining Designs for mmWave Multiuser Systems
IEEE Access, 2017 Hybrid analog/digital precoding architectures are a low-complexity alternative for fully digital precoding in millimeter-wave (mmWave) MIMO wireless systems.
Duy H. N. Nguyen +3 more
doaj +1 more source
Earthquake Spectra, Volume 42, Issue 2, May 2026.This article aims at exploring and validating the use of 3D physics‐based simulated ground motions as seismic input for the derivation of seismic fragility curves based on nonlinear dynamic numerical analyses. Fragility curves are computed for a set of pre‐code (i.e., designed only for vertical loads), reinforced concrete building types representative ...
Chiara Smerzini, Vincenzo Manfredi
wiley +1 more source