Dft-spread-ofdm
WebOct 11, 2024 · In this paper, we for the first time propose and investigate a novel discrete Fourier transform-spread-orthogonal frequency division multiplexing with quadrature index modulation (DFT-S-OFDM-QIM) scheme for practical visible light communication (VLC) systems. By performing subcarrier index modulatio … WebDec 26, 2024 · Over-the-Air Computation with DFT-spread OFDM for Federated Edge Learning. In this study, we propose an over-the-air computation (AirComp) scheme for …
Dft-spread-ofdm
Did you know?
Web为提高DCSK调制的传输效率和LPI性能,文献[12]提出了基于正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)的多载波直接混沌键控扩频(Multi-Carrier Direct-spread Chaotic Shift Keying,MC -DS-CSK)调制,在高斯白噪声信道下的传输性能优于DCSK,且功率效率高、LPI性能好。 WebOct 12, 2024 · A novel OFDM-based waveform with low peak-to-average power ratio (PAPR) and high robustness against phase noise (PN) is presented. It follows the …
WebOct 11, 2024 · More specifically, discrete Fourier transform-spread OFDM (DFT-S-OFDM) has been widely shown as a promising technique for practical VLC systems, due to its … WebNov 19, 2024 · In this study, we propose a framework for chirp-based communications by exploiting discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM). We show that a well-designed frequency-domain spectral shaping (FDSS) filter for DFT-s-OFDM can convert its single-carrier nature to a linear combination of …
WebMar 6, 2024 · Coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is susceptible to nonlinear effects because of its intrinsic high peak-to-average ratio (PAPR). In this paper, two methods based on discrete Fourier transform spread (DFT-S) are introduced to improve the nonlinear tolerance of CO-OFDM system by extracting and … WebApr 7, 2024 · On the other hand, single carrier waveforms, such as the discrete Fourier transform spread OFDM (DFT-s-OFDM), the guard interval DFT-s-OFDM (GI DFT-s-OFDM) and the unique word DFT-s-OFDM (UW DFT-s-OFDM), are usually characterized by low PAPR due to the DFT processing before OFDM modulation . However, GI/UW DFT-s …
WebDFT-spread OFDM (DFTS-OFDM) is a transmission scheme that can combine the desired properties for uplink transmission i.e.; small variations in the instantaneous power of the transmitted signal (‗single carrier‘ property), possibility for low-complexity high- quality equalization in the frequency domain, possibility for ...
Web123doc Cộng đồng chia sẻ, upload, upload sách, upload tài liệu , download sách, giáo án điện tử, bài giảng điện tử và e-book , tài liệu trực tuyến hàng đầu Việt Nam, tài liệu về tất cả các lĩnh vực kinh tế, kinh doanh, tài chính ngân hàng, công nghệ thông truist headquarter raleigh ncWebNov 5, 2024 · Download Citation On Nov 5, 2024, Lei Li and others published Investigation of Low-PAPR Coherent-Optical OFDM System Based on DFT-Spread Find, read and cite all the research you need on ... philippa merrifieldWebFeb 14, 2010 · This paper presents a design of DFT-spread OFDM system applied to an underwater acoustic channel. It does not only combine all the advantages of a conventional OFDM system but also reduces the peak-to-average power ratio of the transmit signal. Besides, the scheme spreads the information over several subcarriers as a result of the … truist having issuesWebJul 7, 2010 · We consider application of the discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-spread OFDM) technique to high-speed fiber optic communications. The DFT-spread … philipp amthor autogrammWebApr 7, 2024 · On the other hand, single carrier waveforms, such as the discrete Fourier transform spread OFDM (DFT-s-OFDM), the guard interval DFT-s-OFDM (GI DFT-s … philipp amhof bülachWebIntuitively, the reason lies in the fact that where OFDM transmit symbols directly modulate multiple sub-carriers, SC-FDMA transmit symbols are first processed by an N-point DFT … truist high yield savings accountWebDFT-s-OFDM Signal Model. In the current NR specifications [2], [3], Discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-s-OFDM) [14] is used for the uplink transmission, … philipp alexander prinzhorn