Results 21 to 30 of about 5,341,111 (402)
Design and Analysis of a New Index-Modulation-Aided DCSK System With Frequency-and-Time Resources
IEEE Transactions on Vehicular Technology, 2023 We propose a new index-modulation-aided differential chaos shift keying (DCSK) system using frequency-and-time resources, referred to as CTIM-DCSK system, to achieve high-data-rate transmissions. In the proposed system, the orthogonal sinusoidal carriers
Yi Fang +4 more
semanticscholar +1 more source
Hamming Distance Optimized Underwater Acoustic OTFS-IM Systems
Entropy, 2023 The orthogonal time frequency space (OTFS) modulation technique can provide reliable communication in time-varying channels. Due to the dispersive characteristics of underwater acoustic channels, this paper proposes an OTFS-IM underwater acoustic ...
Xiaopeng Guo +4 more
doaj +1 more source
Index Modulation for STAR-RIS Assisted NOMA System
IEEE Communications Letters, 2023 In this letter, we first incorporate the concept of index modulation (IM) into simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided non-orthogonal multiple access (NOMA) system to improve the spectral efficiency.
Jing Zhu +4 more
semanticscholar +1 more source
Linear Precoded Index Modulation [PDF]
IEEE Transactions on Communications, 2019 Index modulation (IM) is an attractive concept for next generation communication systems. However, as an emerging technique, there are still some challenges need to be tackled in this frontier. In this paper, we consider two aspects of IM, which are diversity and detection complexity.
Hongming Zhang +4 more
openaire +5 more sources
Cluster Index Modulation for mmWave Communication Systems
Frontiers in Communications and Networks, 2022 In this study, a novel cluster index modulation (CIM) scheme, which is based on indexing the available clusters in the environment, is proposed for future mmWave communication systems.
Mahmoud Raeisi +3 more
doaj +1 more source
OFDM With Hybrid Number and Index Modulation [PDF]
IEEE Access, 2020 A novel transmission scheme is introduced for efficient data transmission by conveying additional information bits through jointly changing the index and number of active subcarriers within each orthogonal frequency division multiplexing (OFDM) subblock. The proposed scheme is different from the conventional OFDM-subcarrier number modulation (OFDM-SNM)
Ahmad M. Jaradat +2 more
openaire +7 more sources
Reconfigurable Intelligent Surface-Based Index Modulation: A New Beyond MIMO Paradigm for 6G [PDF]
IEEE Transactions on Communications, 2019 Transmission through reconfigurable intelligent surfaces (RISs), which control the reflection/scattering characteristics of incident waves in a deliberate manner to enhance the signal quality at the receiver, appears as a promising candidate for future ...
E. Başar
semanticscholar +1 more source
Space-Time Index Modulation [PDF]
2017 IEEE Wireless Communications and Networking Conference (WCNC), 2017 In this paper, we present a new multi-antenna modulation scheme, termed as {\em space-time index modulation (STIM)}. In STIM, information bits are conveyed through antenna indexing in the spatial domain, slot indexing in the time domain, and $M$-ary modulation symbols. A time slot in a given frame can be used or unused, and the choice of the slots used
Ananthanarayanan Chockalingam +2 more
openaire +3 more sources
Frequency-Shift Chirp Spread Spectrum Communications With Index Modulation [PDF]
IEEE Internet of Things Journal, 2021 This article introduces a novel frequency-shift chirp spread spectrum (FSCSS) system with index modulation (IM). By using combinations of orthogonal chirp signals for message representation, the proposed FSCSS with index modulation (FSCSS-IM) system is ...
M. Hanif, Ha H. Nguyen
semanticscholar +1 more source
Super-Mode OFDM With Index Modulation [PDF]
IEEE Transactions on Wireless Communications, 2020 Orthogonal frequency division multiplexing (OFDM) with index modulation (OFDM-IM) appears as a promising multi-carrier waveform candidate for beyond 5G due to its attractive advantages such as operational flexibility and ease of implementation. However, OFDM-IM may not be a proper choice for 5G services such as enhanced mobile broadband (eMBB) since ...
Ali Tugberk Dogukan, Ertugrul Basar
openaire +6 more sources