Results 31 to 40 of about 18,357,996 (200)
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
Mixer‐Based Neural Network for Binary Sequence Generation
Electronics Letters, Volume 62, Issue 1, January/December 2026.This paper proposes MixBinNet, a neural network‐based model for generating binary sequences with low autocorrelation sidelobes, low cross‐correlation and balanced bit distributions. By jointly optimizing these properties through custom loss functions, MixBinNet outperforms conventional chaotic map‐based methods, achieving improved correlation ...
Bora Yoon +3 more
wiley +1 more source
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
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
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Polymeric Optical Code-Division Multiple-Access (CDMA) Encoder and Decoder Modules [PDF]
Polymers, 2011 We propose a low cost polymeric optical waveguides-based optical CDMA encoder and decoder modules. The structures of the optical CDMA encoder and decoder modules are presented. The performance of the optical CDMA encoder and decoder modules is simulated using 10-chip binary phase-shift keying (BPSK) coding schemes.
Lu, Xuejun, Chen, Ray T.
openaire +1 more source
Journal of Engineering, Volume 2026, Issue 1, 2026.We investigate the performance limits of spectral amplitude coding optical code‐division multiple access (SAC‐OCDMA) systems from a receiver‐centric perspective. Existing approaches have focused largely on code design and uniform receiver architectures; however, these measures provide only partial mitigation and lead to rapid BER saturation as the ...
R. Endut +8 more
wiley +1 more source
Turbo receivers for interleave-division multiple-access systems [PDF]
, 2009 In this paper several turbo receivers for Interleave-Division Multiple-Access (IDMA) systems will be discussed. The multiple access system model is presented first. The optimal, Maximum A Posteriori (MAP) algorithm, is then presented.
Cristea, Bogdan Eugen +3 more
core +1 more source
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
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
, 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.
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