Results 91 to 100 of about 7,220 (258)
Plant, Cell &Environment, Volume 48, Issue 3, Page 2285-2297, March 2025.ABSTRACT Understanding mechanisms driving tropical tree growth is essential for comprehending carbon sequestration and predicting the future of tropical forests amid rapid deforestation. We conducted a natural experiment in Mount Cameroon to identify climatic factors limiting diurnal and seasonal growth in dominant tree species across a 2200‐m ...
Lenka Plavcová +6 more
wiley +1 more source
Performance Analysis of ACO-OFDM Visible Light Communication System Based on SCMA [PDF]
, 2022 Xiukai Ruan, Shahid Iqbal Awan
openalex +1 more source
K$K$‐user cyclic shift‐aided serial concatenated code for Gaussian multiple access channel
IET Communications, Volume 19, Issue 1, January/December 2025.A K‐user cyclic shift‐aided serial concatenated code (SCC) is proposed over a Gaussian multiple access channel. In this code, a cyclic shift‐aided SCC, which integrates a regular repeat‐accumulate code with rate‐1/q$1/q$ and cyclic shift spreading (CSS), is employed for each user. This change avoids complex interleaving operation and the main objective
Meilin He +4 more
wiley +1 more source
Case Studies in Construction MaterialsTo broaden the application prospects of fast-melting styrene-butadiene-styrene modifiers (F-SBS) and meet diverse requirements, this study utilizes crumb rubber (CR) as a partial substitute for F-SBS to prepare fast-melting SBS/CR modified asphalt (F ...
Jinyao Li +5 more
doaj +1 more source
Novel Sparse-Coded Ambient Backscatter Communication for Massive IoT Connectivity
, 2018 Low-power ambient backscatter communication (AmBC) relying on radio-frequency (RF) energy harvesting is an energy-efficient solution for batteryless Internet of things (IoT).
Kim, Dong In, Kim, Tae Yeong
core +1 more source
Scheme Design of SR‐DCSK‐WPC System With Energy Buffer in RIS‐Assisted Design
IET Communications, Volume 19, Issue 1, January/December 2025.This research examines the performance improvement of chaotic communication assisted by reconfigurable intelligent surface. Currently, our paper explores the time switching scheme of SWIPT system and the time allocation characteristics of short reference technology, and reconstructs the implementation scheme of the time allocation coefficient.
Gongquan Zhang +3 more
wiley +1 more source
SCMA High-Dimensional Codebook Design Based on VBR-GAM
天地一体化信息网络, 2023 At the physical layer, sparse code multiple access (SCMA) technology is used to solve the problem of massive user access.In the current research on SCMA, in addition to the research on SCMA multi-user detection technology, more attention will be paid to ...
Xu DENG, Ke CHU, Lidong ZHU
doaj +2 more sources
Iterative Clipping Noise Elimination of Clipped and Filtered SCMA-OFDM System
IEEE Access, 2018 Similar to conventional orthogonal frequency division multiplexing (OFDM) signal, the signals of sparse code multiple access combine with orthogonal frequency division multiplexing (SCMA-OFDM) existing the problem that its peak-to-average power ratio ...
Lin Yang +3 more
doaj +1 more source
A Physically Realisable Adversarial Attack Method Based on Attributed Scattering Centre Model
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.In order to make the generated adversarial examples more easily implementable in the physical domain in remote sensing, this article proposes a novel adversarial attack method based on radar imaging principles and the Attribute Scattering Centre Model (ASCM). Experiments on the MSTAR dataset targeting four typical deep learning networks—ResNet50, VGG11,
Bo Wei +4 more
wiley +1 more source
HARQ scheme for sparse code multiple access based on network coding
Tongxin xuebao, 2022 To fulfill the stringent reliability and throughput demand of the beyond-5G and the forthcoming 6G, a novel network coding (NC) based hybrid automatic retransmission request (HARQ) for low-density parity check (LDPC) coded SCMA was proposed.Two ...
Ke LAI, Jing LEI, Wei LIU, Lei WEN
doaj +2 more sources