Results 41 to 50 of about 6,142 (224)

Wireless Power and Data Transfer Technologies for Flexible Bionic and Bioelectronic Interfaces: Materials and Applications

Advanced Materials Technologies, Volume 10, Issue 5, March 4, 2025.
This paper reviews the state‐of‐the‐art and recent advances in bio‐integrated wireless power and data transfer technologies for flexible bionics, wearable and implantable bioelectronics. The architectures, operating principles, materials, and application technologies are presented in detail.
Massimo Mariello, Christopher M. Proctor
wiley   +1 more source

MIMO Assisted Space-Code-Division Multiple-Access: Linear Detectors and Performance over Multipath Fading Channels [PDF]

, 2006
In this contribution we propose and investigate a multiple-input multiple-output space-division, code-division multiple-access (MIMO SCDMA) scheme. The main objective is to improve the capacity of the existing DS-CDMA systems, for example, for supporting
Yang, L.-L.
core  

Multi-User Detection for Group Orthogonal Multi-Carrier Code Division Multiple Access System in Frequency Selective Rayleigh Fading Channel

Journal of Engineering and Sustainable Development, 2008
Code Division Multiple Access (CDMA) suffers from multi-user interference (MUI), and intersymbol interference (ISI) under frequency selective multi-path fading channels. Orthogonal Frequency Division Multiple access (OFDM) is MUI free but achieves lower
Maha George Zia, Harith Akram Nassir
doaj  

Prediction of Central Post‐Stroke Pain by Quantitative Sensory Testing

Annals of Neurology, Volume 97, Issue 3, Page 507-520, March 2025.
Objective Among patients with acute stroke, we aimed to identify those who will later develop central post‐stroke pain (CPSP) versus those who will not (non‐pain sensory stroke [NPSS]) by assessing potential differences in somatosensory profile patterns and evaluating their potential as predictors of CPSP. Methods In a prospective longitudinal study on
Susanna Asseyer, Eleni Panagoulas, Jana Maidhof, Kersten Villringer, Esra Al, Xiuhui Chen, Thomas Krause, Samyogita Hardikar, Arno Villringer, Gerhard Jan Jungehülsing   +9 more
wiley   +1 more source

Energy‐Aware Protocol Design and Evaluation of the PHY Layer in Satellite IoT

International Journal of Satellite Communications and Networking, Volume 43, Issue 2, Page 61-76, March/April 2025.
ABSTRACT Direct‐to‐satellite communication for the Internet of Things (IoT) has attracted significant interest from both the scientific community and major telecommunications players. The integration of satellite connectivity in smartphones and IoT devices promises a transformative impact on critical applications such as environmental monitoring, asset
Simon Heine, Christian A. Hofmann, Andreas Knopp   +2 more
wiley   +1 more source

Joint-Detection and Interference Cancellation Based Burst-by-Burst Adaptive CDMA Schemes [PDF]

, 2002
Spread adaptive quadrature amplitude modulated (AQAM) code-division multiple access (CDMA) is proposed as a powerful means of exploiting the time-variant channel capacity fluctuations of wireless channels.
Ng, S.X., Kuan, E.L., Hanzo, L.
core  

EXIT chart aided design of DS-CDMA UltraWideBand systems using Iterative decoding [PDF]

, 2008
This paper presents a novel ultrawideband (UWB), direct sequence code division multiple access (DS-CDMA) aided system designed for the IEEE 802.15.3a UWB channel specifications.
M. El-Hajjar, Ahmed, Q.Z., S. Chen, El-Hajjar, Mohammed, Chen, Sheng, S. X. Ng, Q. Z. Ahmed, R. A. Riaz, Ng, Soon Xin, L. Hanzo, Riaz, R.A., Hanzo, Lajos   +11 more
core   +1 more source

Multi-code Multicarrier CDMA: Performance Analysis

Journal of Communications Software and Systems, 2006
A new multi-code multicarrier code division multiple access (MC-MC-CDMA) system is proposed and analyzed in afrequency selective fading channel. By allowing each user to transmit an M-ary code sequence, the proposed MC-MC-CDMA system can support various ...
Taeyoon Kim, Jeffrey G. Andrews, Jaeweon Kim, Theodore S. Rappaport   +3 more
doaj  

Design of a Baseband Transceiver for Multicarrier CDMA Communications

EURASIP Journal on Advances in Signal Processing, 2005
Multicarrier systems have become popular for their spectral efficiency and robustness against frequency-selective fading. Multicarrier code-division multiple access (MC-CDMA) is a technique that combines the advantage of multicarrier modulation with ...
Tsai Pei-Yun, Kang Hsin-Yu, Chiueh Tzi-Dar   +2 more
doaj   +1 more source

Impact of Ionospheric Scintillations on GNSS Availability and Precise Positioning

Space Weather, Volume 23, Issue 2, February 2025.
Abstract For many applications where accuracy, availability, and integrity are essential, such as geodetic positioning and civil aviation, Global Navigation Satellite Systems (GNSS) are indispensable. However, GNSS signal dependability is severely hampered by ionospheric disturbances, especially equatorial plasma bubbles (EPBs), particularly in ...
C. R. Aguiar, J. F. G. Monico, A. O. Moraes   +2 more
wiley   +1 more source