Results 31 to 40 of about 5,755 (223)
Optimization of multiple access mode for large-scale constellation networking communication
Xibei Gongye Daxue Xuebao, 2023 In the large-scale satellite constellation technology, the establishment of satellite internal network is the top priority. As the network capacity of the constellation continues to expand and the number of satellite nodes continues to increase, the ...
GUO Xiaoxu +4 more
doaj +1 more source
Multiuser Detection Assisted Time- and Frequency-Domain Spread Multicarrier Code-Division Multiple-Access [PDF]
, 2006 In this contribution, we study a reduced-complexity multiuser detection aided multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) scheme, which employs both time (T)-domain and frequency (F)-domain spreading.
Wei, H., Yang, L-L., Hanzo, L.
core
Identity‐Enabled CDMA LiDAR for Massively Parallel Ranging with a Single‐Element Receiver
Laser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.A novel LiDAR system integrates CDMA modulation with a single‐element detector to achieve massive channel parallel 3D imaging. By using a user identification code and a correlation‐based feedback loop, it overcomes signal collisions and the near‐far problem.
Yixiu Shen, Zi Heng Lim, Guangya Zhou
wiley +1 more source
IMPROVED EXPRESSION FOR THE AVERAGE BEP OF MC-CDMA SYSTEMS WITH MRC DIVERSITY RECEPTION
Electrica, 2010 Multi-carrier code division multiple access (MC-CDMA) which is a combination of multicarrier modulation and code division multiple access has gained wide acceptance in recent works because of its many advanced features.
Ibrahim DEVELI
doaj +2 more sources
CDMA Transmission with Complex OFDM/OQAM
EURASIP Journal on Wireless Communications and Networking, 2007 We propose an alternative to the well-known multicarrier code-division multiple access (MC-CDMA) technique for downlink transmission by replacing the conventional cyclic-prefix orthogonal frequency division multiplexing (OFDM) modulation by an advanced ...
Chrislin Lélé +3 more
doaj +1 more source
Applied Sciences, 2020 The purpose of this article is to propose a new configuration based on OCDMA and Fast-OFDM techniques for access network applications. A hybrid intensity modulation with direct detection, fast orthogonal frequency-division multiplexing–code division ...
Hichem Mrabet
doaj +1 more source
Reliability-Aided Multiuser Detection in Time-Frequency-Domain Spread Multicarrier DS-CDMA Systems [PDF]
, 2009 In this contribution we propose and study a novel multiuser detection (MUD) scheme for multicarrier direct-sequence code-division multiple-access systems employing both time (T)-domain and frequency (F)-domain spreading, which are referred to as the TF ...
Yang, Lie-Liang +5 more
core +1 more source
Revealing Chronotypes Across Aquatic Species Using Acoustic Telemetry
Fish and Fisheries, Volume 26, Issue 6, Page 1134-1145, November 2025.ABSTRACT Acoustic telemetry offers valuable opportunities to investigate individual variability in circadian‐related and other behaviours and how environmental cues shape these patterns in wild fish populations. However, this potential has not yet been fully exploited.
Martina Martorell‐Barceló +27 more
wiley +1 more source
A Novel CDMA-Based Secret Message Multiplexing Scheme by Image Data Hiding
Mathematics, 2023 In this paper, based on the concept of Code Division Multiple Access (CDMA), we propose an innovative secret message multiplexing scheme by digital image data hiding.
Chih-Hung Lee +3 more
doaj +1 more source
Journal 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