Results 71 to 80 of about 7,314 (217)

Interference-Free Broadband Single- and Multi-Carrier DS-CDMA

open access: yes, 2005
The choice of the direct sequence spreading code in DS-CDMA predetermines the properties of the system. This contribution demonstrates that the family of codes exhibiting an interference-free window (IFW) outperforms classic spreading codes, provided ...
Hanzo, L., Hua, W., Yang, L-L.
core   +1 more source

Data collection in IoT networks: Architecture, solutions, protocols and challenges

open access: yesIET Wireless Sensor Systems, Volume 14, Issue 4, Page 85-110, August 2024.
Current IoT data collection techniques are categorised and a comparative evaluation of these methods is performed based on the topics analysed and elaborated by the authors. In addition, a comprehensive analysis of recent advances in IoT data collection is provided, highlighting different data types and sources, transmission protocols from connected ...
Ado Adamou Abba Ari   +6 more
wiley   +1 more source

Personal area technologies for internetworked services [PDF]

open access: yes, 2004
This article reviews wireless enabling technologies to support interworking of heterogeneous networks, and covers two relevant topics; personal area networks and multistandard terminals.
Beach, MA   +9 more
core   +2 more sources

Sequence optimisation for compressed sensing CDMA MIMO radar via mutual coherence minimisation

open access: yesIET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 1178-1192, July 2024.
The authors focus on optimising waveforms for CDMA‐MIMO radar systems, particularly for Compressed Sensing (CS) based target estimation. The study introduces an optimisation framework to modify phase components of code sequences, aiming to minimise off‐diagonal elements in the Gramian matrix of the sensing matrix.
Saravanan Nagesh   +4 more
wiley   +1 more source

Successive-relaying-aided decode-and-forward coherent versus noncoherent cooperative multicarrier space–time shift keying

open access: yes, 2013
—Successive-relaying-aided (SR) cooperative multi-carrier (MC) space–time shift keying (STSK) is proposed for frequency-selective channels. We invoke SR to mitigate the typical 50% throughput loss of conventional half-duplex relaying schemes and MC code ...
Chen, Sheng   +3 more
core   +3 more sources

BER Degradation of MC-CDMA at High SNR with MMSE Equalization and Residual Frequency Offset

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
Multicarrier Code Division Multiple Access (MC-CDMA) is an attractive technique for high speed wireless data transmission in view of its advantages over orthogonal frequency division multiplexing. In this paper, we analyze the performance of fully loaded
P. Harinath Reddy, V. U. Reddy
doaj   +2 more sources

Slow Frequency-Hopping Multicarrier DS-CDMA for Transmission over Nakagami Multipath Fading Channels

open access: yes, 2001
A novel multiple access scheme based on slow frequency hopping multicarrier direct-sequence code division multiple access (SFH/MC DS-CDMA) is proposed and investigated, which can be rendered compatible with the existing second-generation narrowband CDMA ...
Hanzo, L., Yang, L-L.
core  

Linear Multiuser Receivers For Asynchronous Mc-Cdma Systems

open access: yes, 2005
Publication in the conference proceedings of EUSIPCO, Antalya, Turkey ...
BIANCHI, TIZIANO   +2 more
openaire   +5 more sources

Dissecting wireless body area networks routing protocols: Classification, comparative analysis, and research challenges

open access: yesInternational Journal of Communication Systems, Volume 37, Issue 1, 10 January 2024.
WBANs are applied in E‐Healthcare systems, extract the physiological parameters through the implanted (in‐body) and/or wearable(on‐body) sensors applied to the human body, and route them to the remote server in a systematized and well‐grounded manner.
Bhawna Narwal   +5 more
wiley   +1 more source

Near-Instantaneously Adaptive HSDPA-Style OFDM Versus MC-CDMA Transceivers for WIFI, WIMAX, and Next-Generation Cellular Systems

open access: yes, 2007
Burts-by-burst (BbB) adaptive high-speed downlink packet access (HSDPA) style multicarrier systems are reviewed, identifying their most critical design aspects.
Choi, B.J., Hanzo, Lajos
core   +1 more source

Home - About - Disclaimer - Privacy