Results 71 to 80 of about 70,976 (129)
Ergodic achievable rate analysis of one-bit sigma-delta modulated all-digital massive MIMO system
Dianxin kexueThe all-digital massive multiple-input multiple-output (MIMO) system has a wide range of application prospects in mobile communication due to its advantages such as low cost, strong signal processing capability, and flexible configuration.
HU Anzhong, HUANG Lijun
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Guangtongxin yanjiu, 2023 To simplify the structure of real-time coherent Free-Space Optical (FSO) / wireless systems and reduce costs, this paper implements a low-cost FSO system based on bandpass Delta-Sigma Modulation (DSM) technology. A 256-ary Quadrature Amplitude Modulation
WANG Zhong-zhong, AO Xue-yuan, YANG Qi
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Components for oversampled signal processors [PDF]
, 2002 Oversampled converters trade transmission bandwidth for resolution. An idealized model gives an insight into the way in which signals are encoded and thus how they can be manipulated.
Monk, John
core
Video Transmission by Delta-Sigma Modulation
The Journal of the Institute of Television Engineers of Japan, 1963 テレビジョン信号のように直流をふくむ広帯域の信号を符号化伝送することは, 従来PCM, Δ変調を用いて試みられてきた.本報ではΔ変調と同等の簡単な回路でこれよりすぐれた特性が得られるΔ-Σ変調方式を取上げ, この方式によってテレビジョン信号の伝送実験を行なった結果を報告する.実験のため構成した変調装置はトンネルダイオードを基本要素とし, 最高サンプリング周波数60Mc/s, 伝送帯域3.5Mc/sのもので, これによって水平解像度300～350本の再生画像を得た.
Hiroshi Takano +2 more
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METHODS FOR IMPROVING METROLOGICAL PARAMETERS OF ΣΔ-ADC
Измерение, мониторинг, управление, контрольBackground. ADC / DAC are one of the main elements of modern technical systems and, in general, most digital devices that interact with the environment.
A.G. Dmitrienko +3 more
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Correlator based on delta-sigma modulation
Electronics Letters, 1976 The delta-sigma modulation (d.s.m.) technique has been employed for the realisation of a simple correlator which can be used for limited-bandwidth signals.
openaire +1 more source
A novel approach toward optimized image processing using sigma delta modulation
Mehran University Research Journal of Engineering and TechnologyImage processing has widespread uses practically in every branch of science and arts. Processing images is more difficult than processing sound or data as there are more bits in the high pixel quality image.
Aneela Pathan +3 more
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A Second-Order True-VCO ADC Employing a Digital Pseudo-DCO Suitable for Sensor Arrays
SensorsThis paper explores the implementation of a VCO-based ADC, achieving an ENOB of 12 bits with 1 MHz of a sampling rate in the audio bandwidth. The solution exploits the scalability and PVT invariance of a novel digital-to-frequency converter to reduce the
Dante Loi +2 more
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Broad-spectrum antiviral activity of the sigma-1 receptor antagonist PB28 against coronaviruses
Frontiers in MicrobiologyThe continuous evolution of coronaviruses poses persistent and severe threats to both human and animal health. While α- and β-coronaviruses mainly infect mammals, including humans, γ-coronaviruses predominantly infect poultry, causing substantial ...
Gaojie Song +10 more
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Acoustic energy distribution in space around the pipe outlet
Archives of Acoustics, 2014 The class-D power amplifiers which operate in a switched mode have become an attractive alternative of the conventional analog power amplifiers class-A, B and AB in the field of audio applications.
Zbigniew KULKA
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