Results 1 to 10 of about 136,035 (296)
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.
europepmc +6 more sources
Orthogonal frequency division multiplexing with index modulation [PDF]
2012 IEEE Global Communications Conference (GLOBECOM), 2012 In this paper, a novel orthogonal frequency division multiplexing (OFDM) scheme, which is called OFDM with index modulation (OFDM-IM), is proposed for frequency-selective fading channels.
E. Başar +3 more
semanticscholar +6 more sources
Superposition Coded-Orthogonal Frequency Division Multiplexing [PDF]
IEEE Access, 2018 Orthogonal frequency division multiplexing (OFDM) technique is the most used approach in various wireless communication technologies due to its implementation advantages.
Selahattin Gokceli, Gunes Karabulut Kurt
doaj +4 more sources
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
Orthogonal Frequency Division Multiplexing: An Overview [PDF]
arXiv, 2007 Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation scheme that provides efficient bandwidth utilization and robustness against time dispersive channels. This paper deals with the basic system model for OFDM based systems and with self-interference, or the corruption of desired signal by itself in OFDM systems.
Inderjeet, Kaur +2 more
arxiv +3 more sources
Orthogonal Delay-Doppler Division Multiplexing Modulation [PDF]
IEEE Trans. Wireless Commun., vol. 21, no. 12, pp. 11024-11037,
Dec. 2022, 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. A key challenge for the design of DD plane MC modulation is to investigate whether a realizable pulse ...
Hai-Hsing Lin, Jinhong Yuan
arxiv +3 more sources
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
doaj +3 more sources
Orthogonal Frequency Division Multiplexed Quantum Key Distribution [PDF]
IEEE Journal of Lightwave Technology, 33, 4687 (2015), 2015 We propose orthogonal frequency division multiplexing (OFDM), as a spectrally efficient multiplexing technique, for quantum key distribution (QKD) at the core of trustednode quantum networks. Two main schemes are proposed and analyzed in detail, considering system imperfections, specifically, time misalignment issues.
Bahrani, S, Razavi, M, Salehi, JA
arxiv +5 more sources
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
doaj +2 more sources
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
doaj +2 more sources