Results 11 to 20 of about 111,023 (296)

Index modulation for OFDM RadCom systems

open access: yesThe Journal of Engineering, 2021
This paper studies a novel Radar and wireless communication fusion system namely, RadCom, using orthogonal frequency division multiplexing index modulation waveforms.
Gaojian Huang   +3 more
doaj   +1 more source

Orthogonal frequency division multiplexing with subcarrier power modulation for doubling the spectral efficiency of 6G and beyond networks [PDF]

open access: yesTransactions on Emerging Telecommunications Technologies, 2020
With the emergence of new applications (eg, extended reality [XR] and haptics), which require to be simultaneously served not just with low latency and sufficient reliability, but also with high spectral efficiency, future networks (ie, 6G and beyond ...
Jehad M. Hamamreh   +2 more
semanticscholar   +1 more source

Chaotic-based Orthogonal Frequency Division Multiplexing with Index Modulation

open access: yesJournal of Telecommunications and Information Technology, 2022
Orthogonal frequency division multiplexing with index modulation (OFDM-IM), stands out among conventional communication technologies, as it uses the indices of the available transmit entities. Thanks to such an approach, it offers a novel method for the
Sura H. Hussien, Hamsa A. Abdullah
doaj   +1 more source

Adaptive Modulation for Orthogonal Frequency Division Multiplexing [PDF]

open access: yesEngineering and Technology Journal, 2012
Orthogonal frequency division multiplexing (OFDM) is one of the promising technologies to improve the spectral efficiency, enhance system capacity and mitigate inter-symbol interference in the wireless communication system.
Maher K. Mahmood, Abbas Salman Hameed
doaj   +1 more source

Analysis of GFDM as a robust 5G communication technique in noisy environment [PDF]

open access: yes, 2020
One of the challenges of modulation techniques used in Fifth-Generation (5G) is their robustness in noisy environment. Conventional Orthogonal Frequency Division Multiplexing (OFDM) cannot be considered as a 5G waveform in its original form because of ...
Ayaz, Ferheen, Ayaz, Saqib
core   +1 more source

Orthogonal frequency division multiplexing with cascade index modulation

open access: yesIET Communications, 2022
As an emerging technique, index modulation (IM) can improve the system bit error rate (BER) performance due to the robustness of index bits over conventional modulated symbol bits.
Zeng Hu   +3 more
doaj   +1 more source

Spectrum-Efficient Triple-Layer Hybrid Optical OFDM for IM/DD-Based Optical Wireless Communications [PDF]

open access: yes, 2020
In this paper, a triple-layer hybrid optical orthogonal frequency division multiplexing (THO-OFDM) for intensity modulation with direct detection (IM/DD) systems with a high spectral efficiency is proposed.
Ghassemlooy, Zabih   +5 more
core   +2 more sources

MIMO-OFDM/OCDM low-complexity equalization under a doubly dispersive channel in wireless sensor networks

open access: yesInternational Journal of Distributed Sensor Networks, 2020
In this article, three novel systems for wireless sensor networks based on Alamouti decoding were investigated and then compared, which are Alamouti space–time block coding multiple-input single-output/multiple-input multiple-output multicarrier ...
Ahmad AA Solyman   +3 more
doaj   +1 more source

Orthogonal Delay-Doppler Division Multiplexing Modulation [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2022
Inspired by the orthogonal time frequency space (OTFS) modulation, in this paper, we consider designing a multicarrier (MC) modulation on delay-Doppler (DD) plane, to couple the modulated signal with a doubly-selective channel having DD resolutions.
Hai-Hsing Lin, Jinhong Yuan
semanticscholar   +1 more source

Analysis of Doppler and Multipath on Orthogonal Chirp Division Multiplexing in Shallow Water Acoustic Channel

open access: yesIEEE Access, 2022
In the scenario of underwater acoustic communication, Orthogonal Frequency Division Multiplexing (OFDM) is widely used for its high spectral efficiency and high transmission rate.
Bai Yiqi, He Chuanlin
doaj   +1 more source

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