Results 1 to 10 of about 105,406 (173)

Orthogonal frequency division multiple access (OFDMA)-Based visible light communication systems

open access: yesResults in Engineering, 2023
Visible Light Communication (VLC) exploits visible light for high-speed data transmission; it serves as the medium for transmission using intensity modulation.
Yinjie Meng, Zhengjun Wei
doaj   +2 more sources

Adaptive Channel Division and Subchannel Allocation for Orthogonal Frequency Division Multiple Access-Based Airborne Power Line Communication Networks [PDF]

open access: yesSensors
This paper addresses the critical needs of the aviation industry in advancing towards More Electric Aircraft (MEA) by leveraging power line communication (PLC) technology, which merges data and power transmission to offer substantial reductions in ...
Ruowen Yan, Qiao Li, Huagang Xiong
doaj   +2 more sources

Coded Pulse Stream LiDAR Based on Optical Orthogonal Frequency-Division Multiple Access

open access: yesIEEE Access, 2023
In future mobility, robust obstacle detection is imperative for autonomous vehicles, fostering a reliance on vision-based data and the emergence of light detection and ranging (LiDAR) as a pivotal sensor.
Gunzung Kim   +3 more
doaj   +2 more sources

Hybrid model for throughput evaluation of orthogonal frequency division multiple access networks

open access: yesThe Journal of Engineering, 2014
Data throughput is an important metric used in the performance evaluation of the next generation cellular networks such as long-term evolution (LTE) and LTE-advanced.
Shyam Babu Mahato   +4 more
doaj   +2 more sources

Non-Orthogonal Frequency Division Multiple Access [PDF]

open access: yes2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 2020
This paper proposes a frequency-domain multiple user access scheme termed non-orthogonal frequency division multiple access (NoFDMA), which maintains the same data rate per user while allowing more users to access via non-orthogonal user overlapping in a given spectral band.
Tongyang Xu, Izzat Darwazeh
openaire   +1 more source

Multi-Carrier Waveforms and Multiple Access Strategies in Wireless Networks: Performance, Applications, and Challenges

open access: yesIEEE Access, 2022
Current generation mobile communications require high-quality services. Adopting multiple access (MA) and multi-carrier waveforms potentially enhances the quality of services offered to end-users.
Tewelgn Kebede   +4 more
doaj   +1 more source

Optimal Subcarrier Allocation Algorithm for OFDMA Systems [PDF]

open access: yesEngineering and Technology Journal, 2013
An optimal subcarrier allocation algorithm is proposed for orthogonal frequency division multiple access systems over Rayleigh fading channels with channel state information feedback. The transmitted orthogonal frequency division multiple access frame is
Sahar Salman Mahmood
doaj   +1 more source

Energy-efficiency improvements for optical access [PDF]

open access: yes, 2014
This article discusses novel approaches to improve energy efficiency of different optical access technologies, including time division multiplexing passive optical network (TDM-PON), time and wavelength division multiplexing PON (TWDM-PON), point-to ...
Anthapadmanabhan, P   +8 more
core   +1 more source

Blind Joint Soft-Detection Assisted Slow Frequency-Hopping Multicarrier DS-CDMA [PDF]

open access: yes, 2000
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 narrow-band ...
Hanzo, L., Yang, L-L.
core   +1 more source

Design and Implementation of MC-CDMA Technique Using FPGA [PDF]

open access: yesEngineering and Technology Journal, 2013
Multicarrier Code Division Multiple Access (MC-CDMA) is attractive technique for high speed wireless data transmission; it's a combination of Orthogonal Frequency Division Multiplexing (OFDM) and Code Division Multiple Access (CDMA).
il A. H. Hadi, Layla Hattim Abood
doaj   +1 more source

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