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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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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Orthogonal Frequency Division Multiplexing Techniques Comparison for Underwater Optical Wireless Communication Systems. [PDF]
Sensors (Basel), 2019 Optical wireless communication is an energy-efficient and cost-effective solution for high-speed and highly-secure wireless connections. In this paper, we compare, discuss, and analyze three popular optical orthogonal frequency division multiplexing ...
Lian J, Gao Y, Wu P, Lian D.
europepmc +2 more sources
Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing [PDF]
IEEE Photonics JournalVisible light communication (VLC) systems leverage illumination devices, such as light-emitting diodes (LEDs), to serve a dual role as indoor high-speed communication downlinks.
Mohammed S. A. Mossaad +5 more
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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
europepmc +3 more sources
Conditional generative adversarial network technology for OFDM system receiver signal detection. [PDF]
PLoS ONEIn response to the limited detection accuracy of traditional orthogonal frequency division multiplexing systems in complex wireless channel environments, this study first uses conditional generative adversarial networks to construct a single input/output
Yang Liu, Peng Liu, Yu Shi, Xue Hao
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Eigenvalue-Decomposition-Precoded Ultra-Dense Non-Orthogonal Frequency-Division Multiplexing [PDF]
IEEE Transactions on Wireless Communications, 2020 This paper proposes a novel ultra-dense non-orthogonal frequency-division multiplexing (NOFDM) transmission, where subcarrier spacing is set significantly lower than that of orthogonal frequency-division multiplexing (OFDM).
Seichiroh Osaki +2 more
openalex +2 more sources
A Novel Space-Time Coding Echo Separation Scheme with Orthogonal Frequency Division Multiplexing Chirp Waveforms for Multi-Input Multi-Output Synthetic Aperture Radar. [PDF]
Sensors (Basel)Yao K, Liu C.
europepmc +3 more sources
Orthogonal Frequency Division Diversity and Multiplexing for 6G OWC: Principle and Underwater Use Case [PDF]
PhotonicsIn this paper, we, for the first time, propose and demonstrate an orthogonal frequency division diversity and multiplexing (OFDDM) scheme for the sixth-generation (6G) underwater optical wireless communication (UOWC) systems.
Jiamin Chen +8 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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