Results 21 to 30 of about 708 (167)
Orthogonal Subblock Division Multiple Access for OFDM-IM-Based Multi-User VLC Systems
Photonics, 2022 In this paper, we propose and experimentally demonstrate an orthogonal subblock division multiple access (OSDMA) scheme for orthogonal frequency division multiplexing with index modulation (OFDM-IM)-based multi-user visible light communication (MU-VLC ...
Yungui Nie +5 more
doaj +1 more source
OFDM With Differential Index Modulation for Visible Light Communication
IEEE Photonics Journal, 2020 In this paper, orthogonal frequency division multiplexing with differential index modulation (OFDM-DIM) is proposed for visible light communication. Compared with traditional OFDM with index modulation (OFDM-IM), the proposed scheme decreases the average
Di Zheng, Hongming Zhang, Jian Song
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Vector OFDM With Index Modulation
IEEE Access, 2017 The concept of index modulation (IM) has gained increased attention in recent years. As a member of the IM family, orthogonal frequency division multiplexing with index modulation (OFDM-IM), which is able to convey additional information bits using the ...
Yun Liu +4 more
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Enhanced DCT-OFDM system with index modulation [PDF]
, 2019 Discrete cosine transform (DCT) based orthogonal frequency division multiplexing (OFDM), which has double number of subcarrier compared to the classic discrete fourier transform (DFT) based OFDM (DFT-OFDM) at the same bandwidth, is a promising high ...
He, Chang +5 more
core +2 more sources
Space-Time Multiple-Mode Orthogonal Frequency Division Multiplexing With Index Modulation
IEEE Access, 2017 Multiple-mode orthogonal frequency division multiplexing with index modulation (MM-OFDM-IM) improves the spectral efficiency of the conventional OFDM-IM scheme by considering multiple distinguishable constellations for signal modulation.
Jun Li +3 more
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Coherent and Non-Coherent Multilayer Index Modulation
IEEE Access, 2019 Index modulation assisted OFDM (OFDM-IM) has become a popular technique in wireless communications. In this paper, we proposes a novel multilayer framework for OFDM-IM.
Sarath Gopi +2 more
doaj +1 more source
Secure Index with OFDM-IM-based Chaotic System
Iraqi Journal of Information & Communication Technology, 2023 Orthogonal Frequency Division Multiplexing-Index Modulation (OFDM-IM) based on chaos is a com- munication technique that uses chaotic systems to enhance the security of OFDM-IM systems.
Sura H. Hussien, Hamsa A. Abdullah
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Practical Implementation of Index Modulation-Based Waveforms
IEEE Access, 2017 Orthogonal frequency division multiplexing (OFDM) with index modulation (OFDM-IM) technique has been recently proposed to provide performance improvements over conventional OFDM.
Selahattin Gokceli +3 more
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Orthogonal Frequency Division Multiplexing With Joint Subblocks Index Modulation
IEEE Access, 2019 Recently, orthogonal frequency division multiplexing (OFDM) with index modulation has emerged as promising technologies with the improvement of spectral efficiency and energy efficiency, which carries additional index bits through the index domain.
Yuxin Shi +4 more
doaj +1 more source
IEEE Open Journal of Vehicular Technology, 2021 In this paper, we propose two new multiple-access schemes for downlink transmission based on the combination of orthogonal frequency division multiplexing (OFDM) with index modulation (IM), namely OFDM-IM.
Said El-Khamy +2 more
doaj +1 more source