Results 91 to 100 of about 83,036 (231)

Channel Estimation and Hybrid Precoding for Frequency Selective Multiuser mmWave MIMO Systems [PDF]

IEEE Journal on Selected Topics in Signal Processing, 2018
Configuring the hybrid precoders and combiners in a millimeter wave multiuser multiple-input multiple-output system is challenging in frequency selective channels.
José P. González-Coma, Javier Rodríguez-Fernández, Nuria González-Prelcic, L. Castedo, R. Heath   +4 more
semanticscholar   +1 more source

Water availability shapes temporal patterns of extrafloral nectar secretion and ant visitation to a Neotropical legume

Plant Biology, EarlyView.
Drought duration affects ant–plant interactions: extrafloral nectar quality initially increases and subsequently declines, and ant interaction patterns closely track these nectar dynamics. Abstract Mutualistic plants use non‐structural sugar (NSC) to produce carbon‐based resources to reward partners.
B. Melati, C. Souza, A. Nogueira, L. C. Leal   +3 more
wiley   +1 more source

A Comparison of CP-OFDM, PCC-OFDM and UFMC for 5G Uplink Communications

IEEE Access, 2019
Polynomial-cancellation-coded orthogonal frequency division multiplexing (PCC-OFDM) is a form of OFDM that has waveforms which are very well localized in both the time and frequency domains and so it is ideally suited for use in the 5G network.
Gayathri Kongara, Cuiwei He, Lei Yang, Jean Armstrong   +3 more
doaj   +1 more source

A Framework for One-Bit and Constant-Envelope Precoding Over Multiuser Massive MISO Channels [PDF]

IEEE Transactions on Signal Processing, 2018
Consider the following problem: A multi-antenna base station (BS) sends multiple symbol streams to multiple single-antenna users via precoding. However, unlike conventional multiuser precoding, the transmitted signals are subjected to binary, unit ...
Mingjie Shao, Qiang Li, Wing-Kin Ma, A. M. So   +3 more
semanticscholar   +1 more source

Amacrine cell inputs to OFF midget ganglion cells in macaque retina

The Journal of Physiology, EarlyView.
Abstract figure legend The goal of this study was to explain the findings from physiological studies that OFF midget ganglion cells had larger receptive field centers than expected from their dendritic field diameters. First, we confirmed that OFF mRGCs (OFF MGC) receive input from diffuse bipolar cells (DB) as well as OFF midget bipolar cells (FMB ...
David W. Marshak, Andrea S. Bordt, Emma R. Yang, Joel N. Yearick, Marcus Mazzaferri, James A. Kuchenbecker, Judith Mosinger Ogilvie, Sara S. Patterson, Jay Neitz   +8 more
wiley   +1 more source

On the Interference Alignment Designs for Secure Multiuser MIMO Systems

, 2016
In this paper, we propose two secure multiuser multiple-input multiple-output transmission approaches based on interference alignment (IA) in the presence of an eavesdropper.
Duong, Trung Quang, Ha, Kha Hoang, Vo, Nguyen-Son, Vu, Thanh Tung   +3 more
core   +1 more source

Development and Investigation of the Synergistic Properties of Latex (Hevea brasiliensis)/Poly (Vinyl Alcohol) as a Potential Dermal Dressing

Journal of Applied Polymer Science, Volume 143, Issue 10, March 10, 2026.
Development and physicochemical and biological characterization of Latex/PVA membranes at different ratios. ABSTRACT Research on dermal dressings has become increasingly important due to the need for affordable, effective, and accessible alternatives to costly and invasive conventional treatments, with materials such as Latex from Hevea brasiliensis ...
Jessica Asami, Bruna V. Quevedo, Arnaldo R. Santos Jr, Luciana P. Giorno, Elidiane C. Rangel, Daniel Komatsu, Eliana Aparecida de Rezende Duek   +6 more
wiley   +1 more source

Polydopamine Coating in Trabecular Bone‐Like Scaffolds With Strontium‐Substituted Nanohydroxyapatite for Bone Tissue Engineering

Journal of Applied Polymer Science, Volume 143, Issue 9, March 5, 2026.
PLA and strontium‐substituted hydroxyapatite filaments were used in 3D printing to fabricate a trabecular‐inspired scaffold. The scaffold was functionalized with a polydopamine coating. Characterization revealed enhanced surface properties and mechanical performance, supporting its potential application in bone tissue engineering.
Adones Almeida Rocha, Vinicius Oliveira dos Santos, Alexandre Malta Rossi, Anna Carla Araujo, Rossana Mara da Silva Moreira Thiré   +4 more
wiley   +1 more source

Toward Dual‐Function Nanoparticle Platforms for Arboviral Diagnostics and Vaccines: Advances, Challenges, and Future Prospects

Nano Select, Volume 7, Issue 2, February 2026.
This review explores nanoparticle (NP)‐based biosensors and nanovaccine platforms for arboviral infections, highlighting their design, performance, and translational potential. By comparing case studies across viruses, it identifies gold‐standard nanomaterials such as gold NPs (AuNPs), zinc oxide NPs (ZnONPs), molybdenum disulfide (MoS2) nanocomposites,
Peyman Halvaeikhanekahdani, Sajad Zandi, Qadeer Ahmad, Hadiseh Payravand   +3 more
wiley   +1 more source

Multiuser MIMO-OFDM for Visible Light Communications

IEEE Photonics Journal, 2015
Visible light communication (VLC) is emerging as a promising technique to provide ubiquitous wireless connection. In this paper, a multiuser VLC system utilizing multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) is ...
Qi Wang, Zhaocheng Wang, Linglong Dai
doaj   +1 more source