Results 71 to 80 of about 6,142 (224)

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

Multiple access based on three-stage modulation in multi-band OFDM-UWB system

Tongxin xuebao, 2007
According to the characteristics of multi-band orthogonal frequency-division multiplexing ultra-wideband（OFDM-UWB） system,a multiple access based on three-stage modulation（TSM-MA） was proposed.It combined multi-carrier code division multiple access（MC ...
BAO Zhi-hua, ZHANG Shi-bing, ZHANG Guo-an, QIN Jin-jing   +3 more
doaj   +2 more sources

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

Adaptive Transmitter Precoding for Time Division Duplex CDMA in Fading Multipath Channels: Strategy and Analysis

EURASIP Journal on Advances in Signal Processing, 2002
The recently developed blind adaptive techniques for multiuser detection in code division multiple access (CDMA) systems offer an attractive compromise of performance and complexity.
Høst-Madsen Anders, Wang Xiaodong, Reynolds Daryl   +2 more
doaj   +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

On the variable capacity property of CC/DS-CDMA systems [PDF]

, 2006
A complete complementary code based direct sequence code division multiple access (CC/DS-CDMA) system has been proposed recently as a potential candidate for beyond third generation (B3G) wireless communications.
Chen, HH, Song, YH, Yang, Y, Wang, LP
core  

Performance of Generalized Multicarrier DS-CDMA Using Various Chip Waveforms [PDF]

, 2003
In this letter, we extend our investigation of generalized multicarrier direct-sequence code-division multiple access by considering two additional types of chip waveforms, namely, the time-domain half-sine and raised-cosine chip waveforms, in addition ...
Lie-Liang Yang, L. Hanzo, Yang, L-L., Hanzo, L.   +3 more
core   +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

Serial Search Based Initial Code Acquisition in the Multiple Transmit/Receive Antenna Aided Multi-Carrier DS-CDMA Downlink [PDF]

, 2006
Initial code acquisition schemes designed for the multiple transmit/receive antenna aided Multi-Carrier (MC)-DS-CDMA downlink are analysed, when communicating over uncorrelated Rayleigh channels.
Won, S-H., Seunghwan Won, Hanzo, L., Lajos Hanzo   +3 more
core   +1 more source

Spatial sensitivity synthesis based on alternate projection for the machine‐learning‐based coding digital receiving array

IET Radar, Sonar &Navigation, Volume 18, Issue 9, Page 1474-1480, September 2024.
The spatial sensitivity of a machine‐learning‐based coding digital receiving array (ML‐CDRA) is studied which describes the spatial accumulation gain in different directions. It is demonstrated that spatial sensitivity is determined by the encoding network, decoding network, and beamforming criterion.
Lei Xiao, Yubing Han, Shurui Zhang
wiley   +1 more source