Results 41 to 50 of about 16,098 (206)
An Overview of OFDM SAR Imaging Methods
Leida xuebao, 2020 In recent years, Orthogonal Frequency Division Multiplexing (OFDM) signal has been widely used in Synthetic Aperture Radar (SAR) imaging research due to its orthogonality and large bandwidth.
ZHANG Tianxian, XIA Xiang-Gen
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Improved Pilot-Aided Channel Estimation for MIMO-OFDM Fading Channels
International Journal of Antennas and Propagation, 2013 An improved pilot-aided channel estimation scheme is proposed to enhance the channel estimation accuracy of multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) fading channels. Based on the adaptive path number selection
J. Mar, Chi-Cheng Kuo, M. B. Basnet
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Low-Complexity Subcarrier-Wise Detection for MIMO-OFDM With Index Modulation
IEEE Access, 2017 Multiple-input multiple-output orthogonal frequency division multiplexing with index modulation (MIMO-OFDM-IM) is a relatively new multicarrier transmission technique for the MIMO systems to achieve both energy and spectral efficiency.
Zeng Hu +5 more
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Mathematics, 2023 Vehicle-to-vehicle (V2V) communication networks are based on vehicles that wirelessly exchange data, traffic congestion, and safety warnings between them. The design of new V2V systems requires increasingly energetically and spectrally efficient systems.
J. Alberto Del Puerto-Flores +3 more
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A Low-Complexity MIMO-OFDM Transmission Scheme for Optical Wireless Communications
IEEE AccessA novel low-complexity multiple-input multiple-output orthogonal frequency division multiplexing transmission scheme for optical wireless communications (OWC), referred to as LC-MIMO-OFDM, is introduced in this paper. LC-MIMO-OFDM eliminates the need for
Wei-Wen Hu
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Hardware-Based Architecture for DNN Wireless Communication Models
Sensors, 2023 Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO OFDM) is a key technology for wireless communication systems. However, because of the problem of a high peak-to-average power ratio (PAPR), OFDM symbols can be distorted at ...
Van Duy Tran +2 more
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Covert Communication in MIMO-OFDM System Using Pseudo Random Location of Fake Subcarriers
Emitter: International Journal of Engineering Technology, 2016 Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is the most used wireless transmission scheme in the world. However, its security is the interesting problem to discuss if we want to use this scheme to transmit a ...
Rizky Pratama Hudhajanto +2 more
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MIMO precoding for filter bank modulation systems based on PSVD [PDF]
, 2011 In this paper we consider the design of a linearly precoded MIMO transceiver based on filter bank (FB) modulation for transmission over broadband frequency selective fading channels.
Moret, Nicola +2 more
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Highly Efficient MIMO‐OFDM with Index Modulation
Wireless Communications and Mobile Computing, 2022 Index modulation (IM) is a novel digital modulation technique, which inactivates some subcarriers in orthogonal frequency division multiplexing (OFDM) to exploit the indices of the subcarriers to transmit bits implicitly, and has potential to further improve the energy efficiency and error performance.
Zeng Hu +7 more
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Time-and-Frequency Hybrid Multiplexing for Flexible Ambiguity Controls of DFT-coded MIMO OFDM Radar
IEEE Access, 2021 A time-and-frequency hybrid multiplexing technique for a multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) radar is proposed. Discrete Fourier transform (DFT)-coded OFDM waveforms are introduced, which allow it to be
Junseuk Suh +3 more
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