Results 41 to 50 of about 7,178 (195)

Self‐Assembly Pathway Influence on Dehydropeptide‐Based Gel Properties and Drug Release

open access: yesMacromolecular Bioscience, Volume 25, Issue 9, September 2025.
In this work, it is explored how the gelation conditions affect the morphology, mechanical properties, and drug release of dehydropeptide‐based gels. The naphthalene‐capped dehydropeptide forms a crystal structure with a pore diameter of ≈4.08 Å. Gelation conditions can influence gel stiffness by nearly three orders of magnitude, in which the assembly ...
Sérgio R. S. Veloso   +11 more
wiley   +1 more source

Timing Synchronization for Mc-Cdma Systems Using a Time-Multiplexed Synchronization Channel

open access: yesASEAN Journal on Science and Technology for Development, 2017
In this paper, we present a synchronization algorithm for Multi-Carrier CDMA (MC-CDMA) systems using a time-multiplexed synchronization channel. The simulations results show that a system using proposed algorithm has much higher timing detection ...
Pham Hong Ky, Nguyen Duc Long
doaj   +1 more source

Impact of magnetic fields from tablets, laptops, smartphones, and household/leisure magnets on cardiac implantable electronic devices

open access: yesJournal of Arrhythmia, Volume 41, Issue 4, August 2025.
This study on 13 Cardiac implantable electronic device (CIED) models revealed that surface magnetic fields of tablets, laptops, smartphones, and household magnets exceeded 10 G, potentially triggering magnet response mode. Activation occurred at ≤15 mm for electronic devices and ≤7 mm for household magnets.
Norio Kamitani   +11 more
wiley   +1 more source

Multi-code Multicarrier CDMA: Performance Analysis

open access: yesJournal 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   +3 more
doaj  

Spectral Efficiency Comparison of OFDM and MC-CDMA with Carrier Frequency Offset [PDF]

open access: yesRadioengineering, 2017
Inter-carrier interference and multiple access interference due to carrier frequency offset (CFO) are two major factors that deteriorate the performance of orthogonal frequency division multiple access (OFDMA) and multicarrier code division multiple ...
J. Ahmed
doaj  

Non-Coherent Code Acquisition in the Multiple Transmit/Multiple Receive Antenna Aided Single- and Multi-Carrier DS-CDMA Downlink [PDF]

open access: yes, 2007
We analyse the characteristics of the Non-Coherent (NC) Multiple Transmit/Multiple Receive (MTMR) antenna aided Multi-Carrier (MC) DS-CDMA downlink employing a serial search based acquisition scheme, when communicating over spatially uncorrelated ...
Hanzo, L, Won, SH
core   +1 more source

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

open access: yesAdvanced 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

Subcarrier Group Assignment for MC-CDMA Wireless Networks

open access: yesEURASIP Journal on Wireless Communications and Networking, 2007
Two interference-based subcarrier group assignment strategies in dynamic resource allocation are proposed for MC-CDMA wireless systems to achieve
Tho Le-Ngoc, Tallal El Shabrawy
doaj   +2 more sources

Cyclic Prefix-Free MC-CDMA Arrayed MIMO Communication Systems

open access: yes, 2009
The objective of this thesis is to investigate MC-CDMA MIMO systems where the antenna array geometry is taken into consideration. In most MC-CDMA systems, cyclic pre xes, which reduce the spectral e¢ ciency, are used.
Peh, Ho Huat, Peh, Ho Huat
core   +1 more source

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

open access: yesInternational 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   +2 more
wiley   +1 more source

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