Results 41 to 50 of about 1,839 (179)
IEEE Access, 2019 This paper introduces the antenna selection (AS) mechanism into the quantized constant envelope (CE) precoding in massive multiuser multiple-input multiple-output systems to simultaneously reduce multiuser interference and hardware power consumption ...
Jung-Chieh Chen
doaj +1 more source
Precoder and precoding method in a multi-antenna system
, 2012 A precoder and a precoding method in a multiuser multi-antenna system are provided. The precoder includes a channel checker for determining a DownLink (DL) channel condition of terminals in a service coverage area, a pre-compensator for pre-compensating, for channel distortion, signals to be sent to the terminals when a nonlinear algorithm is selected ...
Robert W. Heath, Jr. +4 more
openaire +2 more sources
Precoding for Spread OFDM IM [PDF]
2018 IEEE 87th Vehicular Technology Conference (VTC Spring), 2018 Orthogonal frequency division multiplexing index modulation (OFDM-IM) has been emerging as a promising solution to increase the reliability at low complexity. However, the transmit diversity of the OFDM-IM schemes has been limited to two, due to unbalanced transmit diversity between index bits and complex data bits.
Thien Van Luong +2 more
openaire +3 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
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 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
Public Administration, EarlyView.ABSTRACT Coproduction is an established element in public service provision, linked to positive outcomes such as increased service quality and quantity. Realizing these outcomes requires skills and motivation from street‐level professionals and lay actors alike.
Rikke Kolding
wiley +1 more source
Improved Massive MIMO RZF Precoding Algorithm Based on Truncated Kapteyn Series Expansion
Information, 2019 In order to reduce the computational complexity of the inverse matrix in the regularized zero-forcing (RZF) precoding algorithm, this paper expands and approximates the inverse matrix based on the truncated Kapteyn series expansion and the corresponding ...
Xiaomei Xue +6 more
doaj +1 more source
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
A Performance‐Based Earthquake Fatality Modeling Framework Using Collapse Volume Ratios
Earthquake Spectra, Volume 42, Issue 2, May 2026.Conventional earthquake fatality models are commonly implemented using a binary representation of building collapse, an assumption that overlooks severe failure modes and systematically underestimates fatalities. To address this limitation, this study advances the collapse volume ratio—a continuous metric quantifying the reduction of survivable space ...
Luis Ceferino +6 more
wiley +1 more source