Results 51 to 60 of about 7,314 (217)
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 +2 more
doaj +1 more source
Two-Dimensional Joint Acquisition of Doppler Factor and Delay for MC-DS-CDMA in LEO Satellite System
IEEE Access, 2020 Low Earth Orbit (LEO) satellite systems have received considerable attentions for its advantages and potential applications in global communication. Yet LEO satellite-ground communication is challenged by the huge Doppler shift.
Entong Meng, Xiangyuan Bu
doaj +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 +2 more
core +1 more source
Timing estimator for MC-CDMA system
Electronics Letters, 2002 A new method, using training sequences to correct the block timing offset of the MC-CDMA system in a time-varying multipath channel with frequency offset, is proposed. This new method is compared with the Schmidl and Cox method (see IEEE Trans. Commun., vol.45, no.12, p.1613-21, 1997) in terms of estimator mean and variance, it being found that the new
Luan Yingzi, Li Jiandong, Yang Jiawei
openaire +1 more source
International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.Accurate path loss prediction is vital for 5G deployment, especially at midband frequencies where signal degradation is significant. This paper presents a hybrid model that integrates an optimized COST‐231 Hata model with a random forest algorithm to improve prediction accuracy at 3.5 GHz.
Farouq E. Shaibu +6 more
wiley +1 more source
Cyclic Prefix-Free MC-CDMA Arrayed MIMO Communication Systems
, 2009 The objective of this thesis is to investigate MC-CDMA MIMO systems where the antenna array geometry is taken into consideration. In most MC-CDMA systems, cyclic pre xes, which reduce the spectral e¢ ciency, are used.
Peh, Ho Huat, Peh, Ho Huat
core +1 more source
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 +11 more
wiley +1 more source
IB-DFE receiver techniques for CP-assisted block transmission within DS-CDMA and MC-CDMA systems [PDF]
, 2008 MC-CDMA (MultiCarrier Code Division Multiple Access), currently regarded as a promissing multiple access scheme for broadband communications, is known to combine the advantages of an OFDM-based (Orthogonal Frequency Division Multiplexing), CP ...
Dinis, Rui +2 more
core
Multiuser Detection for the Uplink of Prefix-Assisted DS-CDMA Systems Employing Multiple Transmit and Receive Antennas [PDF]
, 2006 In this paper we consider the uplink transmission within a DS-CDMA system employing CP-assisted (Cylic Prefix) block transmission techniques combined with spatial multiplexing techniques that require multiple antennas at both the transmitter and the ...
Dinis, Rui, Silva, Paulo
core +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 +5 more
wiley +1 more source