Results 11 to 20 of about 2,477 (201)
Research on Digital Steganography and Image Synthesis Model Based on Improved Wavelet Neural Network. [PDF]
Comput Intell Neurosci, 2022 Network compression coding technology is a research hotspot in the field of digital steganography and image synthesis. How to improve image quality while achieving short compression time is a problem currently faced. Based on the improved wavelet neural network theory, this paper constructs a digital steganography and image synthesis model.
Li X, Yao R, Lee J.
europepmc +2 more sources
Speech Technology Progress Based on New Machine Learning Paradigm. [PDF]
Comput Intell Neurosci, 2019 Speech technologies have been developed for decades as a typical signal processing area, while the last decade has brought a huge progress based on new machine learning paradigms. Owing not only to their intrinsic complexity but also to their relation with cognitive sciences, speech technologies are now viewed as a prime example of interdisciplinary ...
Delić V +8 more
europepmc +2 more sources
A hardware prototype of wideband high‐dynamic range analog‐to‐digital converter
IET Circuits, Devices &Systems, Volume 17, Issue 4, Page 181-192, July 2023., 2023 The authors present a hardware prototype of a high‐dynamic range analog‐to‐digital converter (ADC) where a folding operation enhances the dynamic range. The authors show sampling and perfect reconstruction of different classes of signals whose dynamic ranges are larger than that of ADC's dynamic range.
Satish Mulleti +5 more
wiley +1 more source
PAPR reduction technique for FBMC based visible light communication systems
IET Communications, Volume 16, Issue 15, Page 1807-1814, September 2022., 2022 Abstract One of the critical challenges in multicarrier‐based systems is peak to average power ratio (PAPR). Recently, Filter Bank Multicarrier (FBMC) is proved to be a promising candidate that can replace the traditional orthogonal multiplexing division (OFDM) scheme due to its better spectral efficiency, reducing both inter‐channel interference (ICI)
Gerges M. Salama +7 more
wiley +1 more source
PAPR reduction of OFDM systems using H‐SLM method with a multiplierless IFFT/FFT technique
ETRI Journal, Volume 44, Issue 3, Page 379-388, June 2022., 2022 Abstract This study proposes a novel low‐complexity algorithm for computing inverse fast Fourier transform (IFFT)/fast Fourier transform (FFT) operations in binary phase shift keying‐modulated orthogonal frequency division multiplexing (OFDM) communication systems without requiring any twiddle factor multiplications.
Namitha A. Sivadas
wiley +1 more source
State solutions for distribution systems and switching event using a neural network
IET Generation, Transmission &Distribution, Volume 16, Issue 1, Page 71-83, January 2022., 2022 Abstract Power flow calculations are an essential stage in many planning and control applications for distribution systems.To use these in control applications, however, the calculation time needs to be improved, and this can be done by the use of a trained ANN.
Arbel Yaniv +3 more
wiley +1 more source
IET Radar, Sonar &Navigation, Volume 15, Issue 2, Page 128-142, February 2021., 2021 Abstract The Doppler mismatch, range migration and Doppler frequency migration (DFM) correction problem for realizing the long‐time coherent integration of space moving target with high‐speed manoeuvring performance in passive bistatic radar is considered.
Luo Zuo, Jun Wang, Jinxin Sui
wiley +1 more source
Frontiers in Computer Science, 2020 This paper examines the effects of reduced speech bandwidth and the μ-low companding procedure used in transmission systems on the accuracy of speech emotion recognition (SER).
Margaret Lech +3 more
doaj +1 more source
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 In this paper, we consider the opportunities and constraints, which rest on quantization as a guiding principle for data representation and compression. In particular, we propose a novel model of Symmetric Quantile Quantizer (SQQ) and we describe in detail its parameterization. We suggest a simple method for offline precalculation of its parameters and
Zoran Perić +4 more
wiley +1 more source
A Novel Companding Technique to Reduce High Peak to Average Power Ratio in OFDM Systems
IEEE Access, 2021 The reduction of the high peak-to-average-power ratio (PAPR) is important to the efficiency of the orthogonal frequency division multiplexing (OFDM) technique.
Abdulwahid Mohammed +3 more
doaj +1 more source