Results 41 to 50 of about 242 (110)

Generalized orthogonal transmission system and its efficient implementation method

Tongxin xuebao, 2002
Based on subband transformation theory, a general model for orthogonal transmultiplexers is constructed. Besides several popular multiuser communication applications such as TDMA, FDMA and CDMA, it can also describe multi-carrier systems such as OFDM and
ZHANG Deng-yin, ZHENG Bao-yu
doaj   +2 more sources

Blind Linear MMSE Receivers for MC-CDMA Systems [PDF]

IEEE Transactions on Circuits and Systems I: Regular Papers, 2007
This paper studies blind constrained minimum output energy (CMOE)-based and subspace-based linear minimum mean-squared-error (LMMSE) detectors for multi-carrier code division multiple access (MC-CDMA) systems. By imposing quadratic weight constraint, the CMOE detector is made more robust against signature waveform mismatch, and a better performance ...
Chan, SC, Cheng, H
openaire   +3 more sources

Internet of Things in Healthcare Research: Trends, Innovations, Security Considerations, Challenges and Future Strategy

International Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.
The Internet of Things (IoT) has become a transformative force across various sectors, including healthcare, offering new opportunities for automation and enhanced service delivery. The evolving architecture of the IoT presents significant challenges in establishing a comprehensive cyber‐physical framework. This paper reviews recent advancements in IoT‐
Attiq Ur Rehman, Songfeng Lu, Md Belal Bin Heyat, Muhammad Shahid Iqbal, Saba Parveen, Mohd Ammar Bin Hayat, Faijan Akhtar, Muhammad Awais Ashraf, Owais Khan, Dustin Pomary, Mohamad Sawan, Said El Kafhali   +11 more
wiley   +1 more source

Dynamic and efficient device collaborations in 5G‐advanced and 6G networks

IET Communications, Volume 18, Issue 19, Page 1437-1450, December 2024.
Collaborative transmission, comprising multiple devices owned by a single user, is progressively evolving into an essential strategy to meet the stringent demands of burgeoning collaborative scenarios in 5G‐advanced and 6G networks. This paper proposes three novel use cases for device collaboration, namely data duplication, data splitting and wireless ...
Xianghui Han, Shuai Zhou, Shuaihua Kou, Jian Li, Ruiqi Liu, Shi Jin   +5 more
wiley   +1 more source

Time transfer via single‐record TDoA measurements of GNSS satellites using direct cross‐correlation and relative pilot code phases

IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2447-2453, December 2024.
A method is presented to passively synchronise data records via GNSS raw signals in a single record requiring only a GNSS antenna, an analogue‐to‐digital converter and computation hardware. The clock bias is estimated via the common view method with either full raw signal correlation or software‐based code correlation of individual signals from the GPS,
Erik Busley, Timotej Žuntar, Jörg Borgmann, Michael Krist   +3 more
wiley   +1 more source

Design and Implementation of MC-CDMA Systems for Future Wireless Networks

EURASIP Journal on Advances in Signal Processing, 2004
The emerging need for high data rate wireless services has raised considerable interest in MC-CDMA systems. In this work, we describe an MC-CDMA system design process for indoor propagation scenarios.
Le Nours Sébastien, Nouvel Fabienne, Hélard Jean-François   +2 more
doaj   +1 more source

Compensation of Fading Channels Using Partial Combining Equalizer in MC-CDMA Systems

Journal of Telecommunications and Information Technology, 2017
In this paper the performance of a partial combining equalizer for Multi-Carrier Code Division Multiple Access (MC-CDMA) systems is analytically and numerically evaluated. In the part of channel identification, authors propose a blind algorithm based on
Mohammed Zidane, Said Safi, Mohamed Sabri   +2 more
doaj   +1 more source

Dimmable constant weight polar‐coded non‐orthogonal multiple access with orthogonal space‐time block coding visible light communication systems

IET Communications, Volume 18, Issue 17, Page 1071-1078, October 2024.
The study integrates dimmable constant weight polar‐coded non‐orthogonal multiple access (CWPC‐NOMA) with orthogonal space‐time block coding (OSTBC) for visible light communication (VLC). The proposed scheme enhances spectral efficiency and reliability while optimizing resource utilization and leveraging transmit diversity.
Oluwaseyi Paul Babalola, Vipin Balyan
wiley   +1 more source

Predicting the coupling of HPEM waveform with a power amplifier in perforated conductive enclosure using FDDM/VF

IET Science, Measurement &Technology, Volume 18, Issue 8, Page 429-442, October 2024.
The impact of high‐power electromagnetic on the power amplifier inside the conductive enclosure has been investigated. By using the finite difference delay modelling numerical method as a stable method followed by the vector fitting method, the electromagnetic problem has become a circuit problem, which allows examining the response of the power ...
Ali Kalantarnia, Abdollah Mirzabeigi
wiley   +1 more source

An Injectable Composite Co‐Assembled Dehydropeptide‐Based Magnetic/Plasmonic Lipogel for Multimodal Cancer Therapy

Advanced Functional Materials, Volume 34, Issue 38, September 18, 2024.
A composite co‐assembled dehydropeptide‐based gel is designed for the orthogonal triggered release of doxorubicin and methotrexate. The incorporation of mesoporous silica‐coated gold nanorods and magnetic liposomes within the gel allows for the combined effects of sequential drug release through photothermia and magnetic hyperthermia, resulting in ...
Sérgio R. S. Veloso, Margarita Vázquez‐González, Carlos Spuch, Luis Freiría‐Martínez, María Comís‐Tuche, Marta Iglesias‐Martínez‐Almeida, Tania Rivera‐Baltanás, Loic Hilliou, C. O. Amorim, V. S. Amaral, Paulo J. G. Coutinho, Paula M. T. Ferreira, Elisabete M. S. Castanheira, Miguel A. Correa‐Duarte   +13 more
wiley   +1 more source