Results 91 to 100 of about 1,654 (206)
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
New Neighbors on the Road: Bee‐Eaters Abandon Traditional Colonies Along Marsh Borders
The Bulletin of the Ecological Society of America, Volume 106, Issue 4, October 2025.
Jacinto Román +5 more
wiley +1 more source
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
An SCMA-Based Grant-Free Access Scheme
This paper elaborates on the idea of building grant-free channel access schemes from non-orthogonal multiple access ones, and proposes an explicit such scheme based on sparse code multiple access (SCMA).
Paolini, Enrico +4 more
core +1 more source
Optimized SCMA Codebook Design by QAM Constellation Segmentation With Maximized MED
IEEE Access, 2018 An optimized design of a sparse code multiple access (SCMA) codebook for uplink wireless communications is presented by dividing an optimized 16-point round quadrature amplitude modulation (QAM) into several subsets.
Shunlan Liu +3 more
doaj +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
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
Wavelet-Based Cognitive Scma System for Mmwave 5g Communication Networks
, 2017 Fifth generation (5G) communication networks can achieve high spectral efficiency using sparse code multiple access (SCMA) scheme when large number of users are trying to transmit their data simultaneously.
Anpalagan, Alagan +3 more
core +1 more source
Performance Analysis of Codebooks for Uplink Scma Systems
, 2020 Sparse Code Multiple Access (SCMA) is a novel non - orthogonal multiple access (NOMA) technique, which is being considered as the best option for 5G - NR (New Radio).
Dimpal Keniya
core +1 more source
Colonizers on the road: European bee‐eaters shift nest‐site selection to roadside habitats
Ecology, Volume 106, Issue 6, June 2025.
Jacinto Román +5 more
wiley +1 more source