Results 1 to 10 of about 11,922 (129)
Secure Index and Data Symbol Modulation for OFDM-IM [PDF]
IEEE Access, 2017 In this paper, we propose a secure index and data symbol modulation scheme for orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems.
Yonggu Lee +3 more
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Enhanced signal spaces assisted media-based modulation in index modulation-based MIMO networks [PDF]
Scientific ReportsIndex modulation, which develops the additional information using the antenna index (AI) domain, is a promising modulation technique for next wireless communications.
Jianrong Huang +4 more
doaj +2 more sources
Differential Reflecting Frequency Modulation with QAM for RIS-Based Communications [PDF]
SensorsReconfigurable intelligent surface (RIS)-aided index modulation (IM) shows great potential for next-generation wireless communications. Nevertheless, obtaining channel state information (CSI) for RIS-based IM incurs high pilot overhead, particularly for ...
Yajun Fan +3 more
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Index Modulation Techniques for Next-Generation Wireless Networks
IEEE Access, 2017 What is index modulation (IM)? This is an interesting question that we have started to hear more and more frequently over the past few years. The aim of this paper is to answer this question in a comprehensive manner by covering not only the basic ...
Ertugrul Basar +5 more
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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
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
doaj +1 more source
Null Subcarrier Index Modulation in OFDM Systems for 6G and Beyond
Sensors, 2021 Computational complexity is one of the drawbacks of orthogonal frequency division multiplexing (OFDM)-index modulation (IM) systems. In this study, a novel IM technique is proposed for OFDM systems by considering the null subcarrier locations (NSC-OFDM ...
Tuncay Eren, Aydin Akan
doaj +1 more source
IEEE Transactions on Industrial Electronics, 2021 In this article, a multilevel inverter (MLI) scheme is proposed for four-pole (4-pole), nine-phase (9-phase) induction motor (IM) drives with improved dc bus utilization as well as reduced device count. The proposed MLI is realized with nine three-switch inverter legs (3-SIL) and a single dc source.
Bhimireddy Prathap Reddy +2 more
openaire +3 more sources
IEEE Access, 2023 Every existing deep learning (DL)-based detector for orthogonal frequency division multiplexing with index modulation (OFDM-IM) is optimized for one instance for modulation parameters (MPs) such as the modulation orders and the number of active ...
Junghyun Kim, Hosung Park
doaj +1 more source
Polar-Coded OFDM With Index Modulation
IEEE Access, 2021 In this paper, we apply polar codes to a modified version of OFDM systems with index modulation which is called OFDM with in-phase/quadrature index modulation (OFDM-I/Q-IM).
Si-Yu Zhang, Behnam Shahrrava
doaj +1 more source