Results 1 to 10 of about 311,948 (264)
Golden Codeword Based Generalized Differential Alamouti Modulation
IEEE Access, 2020 Conventional differential modulation is capable of performing detection without knowledge of the channel state information at the receiver. However, it suffers a 3 dB error performance penalty as compared to its coherent counterparts.
Hongjun Xu +2 more
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IEEE Access, 2023 In this work, we consider a selective Detect-and-Forward (a symbol based decode-and-forward) (DetF) multi-relay two-way network employing differential MPSK with regularized Weighted Decision Feedback Differential Coherent (WDFDC) receivers.
Junqian Zhang, Harry Leib
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Differential Data-Aided Beam Training for RIS-Empowered Multi-Antenna Communications
IEEE Access, 2022 The Reconfigurable Intelligent Surface (RIS) constitutes one of the prominent technologies for the next generation of wireless communications. It is envisioned to enhance the signal coverage in cases when the direct link of the communication is weak ...
Kun Chen-Hu +2 more
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Konsep Transmisi Tidak Koheren menggunakan Differential Unitary Modulation pada OFDMA
Jurnal Elkomika, 2021 ABSTRAK Differential modulation adalah sebuah teknik modulasi yang memungkinkan pengiriman informasi tanpa diperlukannya estimasi kondisi kanal di sisi penerima.
DHONI PUTRA SETIAWAN +2 more
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A Differential Modulation Scheme for Metasurface-Based Terahertz Communications
Frontiers in Communications and Networks, 2021 Metasurface-based terahertz (THz) modulators, which carry information by changing the spatial pattern of the metasurface at every symbol time, are an important component to establish low-cost low-energy–consuming THz communication systems.
Shuaishuai Guo, Jia Ye, Peng Zhang
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Channel Estimation and Prediction in a Pilot-Less Massive MIMO TDD Using Non-Coherent DMPSK
IEEE Access, 2022 A novel time division duplex massive MIMO technique is proposed based on performing a pilot-less channel estimation in the uplink (UL) utilizing reconstructed differentially encoded data.
Manuel J. Lopez-Morales +1 more
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Artificially Time-Varying Differential MIMO for Achieving Practical Physical Layer Security
IEEE Open Journal of the Communications Society, 2021 In this paper, we propose a differential multiple-input multiple-output (MIMO) scheme based on the novel concept of chaos-based time-varying unitary matrices to demonstrate—for the first time in the literature—the ability of differential ...
Naoki Ishikawa +4 more
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A Low-Complexity Underwater Acoustic Coherent Communication System for Small AUV
Remote Sensing, 2022 While underwater acoustic (UWA) communication offers a practical way to establish a wireless link with underwater vehicles, designing a UWA communication system onboard a small autonomous underwater vehicle (AUV) still poses significant challenges.
Weihua Jiang +4 more
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OFDM System Design for Measured Ultrasonic Underwater Channels
Sensors, 2022 In this paper, we present the development of a multicarrier modulation system of low complexity for broadband underwater acoustic communications (UAC), whose frequency band is located in the ultrasonic range, specifically between 32 kHz and 128 kHz ...
Pablo Cobacho-Ruiz +3 more
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Modulation of Oligodendrocyte Differentiation by Mechanotransduction [PDF]
Frontiers in Cellular Neuroscience, 2016 Oligodendrocytes (OLs) are responsible for the myelination of axons in the central nervous system (CNS). The differentiation of OLs encompasses several stages, through which cells undergo dramatic biochemical and morphological changes. OL differentiation is modulated by soluble factors (SFs)-such as growth factors and hormones-, known to be essential ...
Tânia Lourenço +3 more
openaire +4 more sources