Results 61 to 70 of about 7,178 (195)

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

Time-Hopping Multicarrier Code-Division Multiple-Access [PDF]

, 2006
A time-hopping multicarrier code-division multiple-access (TH/MC-CDMA) scheme is proposed and investigated. In the proposed TH/MC-CDMA each information symbol is transmitted by a number of time-domain pulses with each time-domain pulse modulating a ...
Lie-liang Yang, Senior Member
core   +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

MC-CDMA aided multi-user space-time shift keying in wideband channels [PDF]

, 2013
In this paper, we propose multi-carrier code division multiple access (MC-CDMA)-aided space-time shift keying (STSK) for mitigating the performance erosion of the classic STSK scheme in dispersive channels, while supporting multiple users.
Chen, Sheng, Hanzo, Lajos, Kadir, Mohammad Ismat, Sugiura, Shinya   +3 more
core   +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

Initial synchronisation of wideband and UWB direct sequence systems: single- and multiple-antenna aided solutions [PDF]

, 2012
This survey guides the reader through the open literature on the principle of initial synchronisation in single-antenna-assisted single- and multi-carrier Code Division Multiple Access (CDMA) as well as Direct Sequence-Ultra WideBand (DS-UWB) systems ...
Hanzo, Lajos, Won, SeungHwan
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

Performance of STBC MC-CDMA systems over outdoor realistic MIMO channels [PDF]

, 2004
The paper deals with orthogonal space-time block coded MC-CDMA systems in outdoor realistic downlink scenarios with up to two transmit and receive antennas.
Baudais, Jean-Yves, Hélard, Jean-François, Portier, Fabrice   +2 more
core   +1 more source

Joint multiuser detection and cancelation of nonlinear distortion effects for the uplink of MC-CDMA systems [PDF]

, 2006
In this paper we consider the uplink transmission in MC-CDMA systems (multicarrier coded division multiple access). To reduce the envelope fluctuations of the transmitted signals, the MC-CDMA signal associated to each MT (mobile terminal) is submitted to
Dinis, Rui, Silva, Paulo
core   +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