Results 21 to 30 of about 435,575 (301)
Reversible Data Hiding in Encrypted Images Based on Two-Round Image Interpolation
Mathematics, 2023 The data embedding of vacating room after encryption reversible data hiding in encrypted images (VRAE RDHEI) is performed on an encrypted image without redundancy and spatial correlation.
Qing Zhang, Kaimeng Chen
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Viterbi decoder without carrier recovery
Electronics Letters, 1996 A novel Viterbi algorithm of low complexity without carrier recovery is proposed. The most important modification is that the decision metric for surviving paths is not the cumulated variable but its amplitude. Simulation results of its application to MDPSK and convolutional code show negligible performance loss.
S.D. Zhou, S.L. Mei, Y. Yao
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The self-carrier effect of hematite in the flotation
工程科学学报, 2019 Finely disseminated iron ores are a type of refractory iron ores that exist in many regions in China, where fine grind is essential to liberate iron minerals from gangue.
Dong LI +3 more
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Recovery after hot-carrier injection: Slow versus fast traps
Microelectronics Reliability, 2019 Long-channel nMOSFETs have been electrically degraded by hot-carrier injection and the recovery at a temperature of T = 85 °C in air has been investigated. Charge-pumping measurements have been performed in combination of IV measurements to distinguish between interface defects, deeper defects and charge detrapping.
de Jong, Maurits J. +2 more
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Pilot-Symbols Aided Carrier Phase Recovery for 100G PM-QPSK Digital Coherent Receivers [PDF]
, 2012 A feed-forward pilot-symbols aided carrier phase recovery scheme is described. The approach relies on pilot symbols that are time-division multiplexed with the transmitted data.
Barletta, Luca +7 more
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Simulasi Sinkronisasi Carrier pada Modulasi Digital menggunakan Matlab
Jurnal Elkomika, 2014 ABSTRAKDalam sistem komunikasi digital, salah satu manfaat teknik pengkodean adalah sebagai efisiensi bandwidth. Pada kanal komunikasi, adanya noise akan mengganggu dan menurunkan kinerja sistem komunikasi digital.
DWI ARYANTA +2 more
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Carrier Phase Recovery for Array Navigation Receiver: A Fast Phase Retrieval Approach
IEEE Access, 2019 A fast carrier phase recovery scheme is developed for satellite navigation receiver using an antenna array based on the phase retrieval theory, in which the antenna array provides sufficient measurement information for the phase recovery algorithm. First,
Qiang Li +4 more
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Machine learning aided carrier recovery in continuous-variable quantum key distribution
npj Quantum Information, 2021 The secret key rate of a continuous-variable quantum key distribution (CV-QKD) system is limited by excess noise. A key issue typical to all modern CV-QKD systems implemented with a reference or pilot signal and an independent local oscillator is ...
Hou-Man Chin +4 more
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International Journal of Reconfigurable Computing, 2014 This paper presents an efficient all digital carrier recovery loop (ADCRL) for quadrature phase shift keying (QPSK). The ADCRL combines classic closed-loop carrier recovery circuit, all digital Costas loop (ADCOL), with frequency feedward loop, maximum ...
Kaiyu Wang +4 more
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Nanomaterials, 2023 Lead halide perovskites (LHPs) have excellent semiconductor properties. They have been used in many applications such as solar cells. Recently, the hot carrier dynamics in this type of material have received much attention as they are useful for ...
Zhenqiang Huang +5 more
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