Results 71 to 80 of about 16,098 (206)
Adaptive
IEEE Access, 2020 Due to high peak-to-average-power ratio (PAPR) and low spectral-efficiency, the conventional Fast Fourier Transform based orthogonal frequency division multiplexing (OFDM) is losing its place to the other multicarrier modulation schemes.
Vishal Sharma +2 more
doaj +1 more source
Optical MIMO-OFDM with Generalized LED Index Modulation [PDF]
IEEE Transactions on Communications, 2017 Visible light communications (VLC) is a promising and uncharted new technology for the next generation of wireless communication systems. This paper proposes a novel generalized light emitting diode (LED) index modulation method for multiple-input-multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM)-based VLC systems.
Anil Yesilkaya +5 more
openaire +3 more sources
Advanced Optical Materials, Volume 13, Issue 13, May 5, 2025.New fluorescent optical antennas are realized and tested for diverse Optical Wireless Communication (OWC) applications. The fluorescent concentrator slabs, based on different organic fluorophores, convert and convey the digital data conveyed through intensity modulation of incoming light toward a small‐area photodiode.
Marco Meucci +8 more
wiley +1 more source
Fingerprinting‐Based Indoor Localization in a 3 × 3 Meter Grid Using OFDM Signals at Sub‐6 GHz
Applied AI Letters, Volume 6, Issue 1, February 2025.ABSTRACT Accurately determining the indoor location of mobile devices has garnered significant interest due to the complex challenges posed by non‐line‐of‐sight (NLOS) propagation and multipath effects. To address this challenge, this paper proposes a new approach to indoor positioning that utilises channel state information (CSI) and machine learning (
Jaspreet Kaur +6 more
wiley +1 more source
Journal of Electrical and Computer Engineering, 2013 MIMO OFDM is a very promising technique for future wireless communication systems. By applying direct conversion architecture, low-cost, low-power, small size, and flexible implementation of MIMO OFDM systems can be realized.
Jian Luo +2 more
doaj +1 more source
上海师范大学学报. 自然科学版, 2015 For new generation wireless communication networks,this paper studies the optimization of the capacity and end-to-end throughput of the MIMO-OFDM based multi-hop relay systems.A water-filling power allocation method is proposed to improve the channel ...
LIU Jun
doaj +1 more source
Low-Complexity Detection/Equalization in Large-Dimension MIMO-ISI Channels Using Graphical Models
, 2011 In this paper, we deal with low-complexity near-optimal detection/equalization in large-dimension multiple-input multiple-output inter-symbol interference (MIMO-ISI) channels using message passing on graphical models.
Chockalingam, A. +4 more
core +1 more source
Enabling VLSI Processing Blocks for MIMO‐OFDM Communications [PDF]
VLSI Design, 2008 Multi‐input multi‐output (MIMO) systems combined with orthogonal frequency‐division multiplexing (OFDM) gained a wide popularity in wireless applications due to the potential of providing increased channel capacity and robustness against multipath fading channels.
BARBARA CERATO +2 more
openaire +3 more sources
Engineering Reports, Volume 7, Issue 1, January 2025.ABSTRACT Due to the long transmission distance of the constellation network represented by the low‐orbit satellite system, the satellite‐to‐ground link is subject to large path loss and limited communication performance. This paper uses multi‐satellite and multi‐beam joint transmission technology to form a virtual multiplex network with ground multi ...
Yuyang Liu, Tong Shi, Hua Wang
wiley +1 more source
PERBANDINGAN PERFORMANSI SISTEM MC-SS MIMO DENGAN OFDM MIMO
Majalah Ilmiah Teknologi Elektro, 2016 The combination of the system has been doing to improve the reliability of wireless communication. One parameter that indicates the reliability of wireless communication is to reduce the value of BER.
Ni Putu Eka Apsari Yuniari +2 more
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