Spectrally efficient optical orthogonal frequency division multiplexing. [PDF]
Philos Trans A Math Phys Eng Sci, 2020 This paper charts the development of spectrally efficient forms of optical orthogonal frequency division multiplexing (OFDM) that are suited for intensity-modulated direct detection systems, such as wireless optical communications.
Lowery AJ.
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Capacity limit for faster-than-Nyquist non-orthogonal frequency-division multiplexing signaling. [PDF]
Sci Rep, 2017 Faster-than-Nyquist (FTN) signal achieves higher spectral efficiency and capacity compared to Nyquist signal due to its smaller pulse interval or narrower subcarrier spacing. Shannon limit typically defines the upper-limit capacity of Nyquist signal.
Zhou J +6 more
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10 Mb/s visible light transmission system using a polymer light-emitting diode with orthogonal frequency division multiplexing [PDF]
Optics Letters, 2014 We present a newly designed polymer light-emitting diode with a bandwidth of ~350 kHz for high-speed visible light communications. Using this new polymer light-emitting diode as a transmitter, we have achieved a record transmission speed of 10 Mb/s for
Son Thai Le +11 more
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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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Adaptive Modulation for Orthogonal Frequency Division Multiplexing [PDF]
Engineering 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
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Chaotic-based Orthogonal Frequency Division Multiplexing with Index Modulation
Journal 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
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Orthogonal frequency division multiplexing with cascade index modulation [PDF]
IET 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
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A Survey on Physical Layer Techniques and Challenges in Underwater Communication Systems
Journal of Marine Science and Engineering, 2023 In the past decades, researchers/scientists have paid attention to the physical layer of underwater communications (UWCs) due to a variety of scientific, military, and civil tasks completed beneath water.
Naveed Ur Rehman Junejo +6 more
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Orthogonal frequency division multiplexing with subcarrier power modulation for doubling the spectral efficiency of 6G and beyond networks [PDF]
Transactions 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
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Index modulation for OFDM RadCom systems
The 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
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