Results 131 to 140 of about 7,894 (165)
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Effects of Signal Quantization on the Performance of Multichannel Processing Systems
The Journal of the Acoustical Society of America, 1969This paper determines the effects of amplitude quantizing on the performance of conventional or optimum multichannel space, time signal-processing systems, with emphasis on underwater acoustic applications. The system output signal-to-disturbance ratio is chosen as the performance criterion.
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IEEE Signal Processing Magazine, 2016
Inner-product operations are used extensively in embedded digital signal processing (DSP) systems. Their applications range from signal processing (filtering/convolution) to inference (classification). In embedded systems, resources (energy, area, etc.) are typically highly constrained, making tradeoffs with computational precision a fundamental ...
Zhuo Wang, Jintao Zhang, Naveen Verma
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Inner-product operations are used extensively in embedded digital signal processing (DSP) systems. Their applications range from signal processing (filtering/convolution) to inference (classification). In embedded systems, resources (energy, area, etc.) are typically highly constrained, making tradeoffs with computational precision a fundamental ...
Zhuo Wang, Jintao Zhang, Naveen Verma
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Level quantization effects in digital signal processing by discrete Fourier transform method
2010 East-West Design & Test Symposium (EWDTS), 2010The paper is aimed at drawing the attention of developers of measuring and computing devices based on modern microelectronic elements to a crucial problem of digital signal processing - quantization of the signal levels. Study of the quantization effects and of distortions caused by those effects is carried out for spectral analysis based on discrete ...
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2016 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET), 2016
An accurate design of low power Voltage Controlled Oscillator (VCO) enabled quantizer in Continuous Time Sigma Delta ADC in 180nm CMOS technology using Tanner EDA tools is done. The proposed architecture consists of the loop filter, VCO quantizer and the DAC in the feedback side of model.
Ankita Khurana +2 more
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An accurate design of low power Voltage Controlled Oscillator (VCO) enabled quantizer in Continuous Time Sigma Delta ADC in 180nm CMOS technology using Tanner EDA tools is done. The proposed architecture consists of the loop filter, VCO quantizer and the DAC in the feedback side of model.
Ankita Khurana +2 more
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39th European Conference and Exhibition on Optical Communication (ECOC 2013), 2013
The potential of four-level optical phase quantizers towards coherent processing of advanced modulation formats such as 16-QAM is proposed and numerically demonstrated. The work shows that phase quantization can demultiplex 16-QAM into two QPSK signals enabling sub-channel switching and optical regeneration of 16-QAM modulation formats.
A. Bogris, D. Syvridis
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The potential of four-level optical phase quantizers towards coherent processing of advanced modulation formats such as 16-QAM is proposed and numerically demonstrated. The work shows that phase quantization can demultiplex 16-QAM into two QPSK signals enabling sub-channel switching and optical regeneration of 16-QAM modulation formats.
A. Bogris, D. Syvridis
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2017 IEEE First Ukraine Conference on Electrical and Computer Engineering (UKRCON), 2017
This paper describes a new method of analyzing the effects of the quantization noise in cascaded multirate filter structure based on a calculation of Power Spectral Density (PSD) of quantization noise at the output of the digital system with the consideration of the filtering action of all its multiple cascades and multiple decimations.
Mykola Pavlenko, Alexander Kalyuzhny
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This paper describes a new method of analyzing the effects of the quantization noise in cascaded multirate filter structure based on a calculation of Power Spectral Density (PSD) of quantization noise at the output of the digital system with the consideration of the filtering action of all its multiple cascades and multiple decimations.
Mykola Pavlenko, Alexander Kalyuzhny
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Signal Processing, 1985
Abstract The quantization noise introduced by the direct arithmetic operations on delta modulated signals can be considerably reduced by a proposed technique. According to this technique, the arithmetic network of a digital filter is clocked at a rate higher than that of the delta modulation encoder. Thus, as it is proved, a considerable reduction of
N. Kouvaras, J. Karakatsanis
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Abstract The quantization noise introduced by the direct arithmetic operations on delta modulated signals can be considerably reduced by a proposed technique. According to this technique, the arithmetic network of a digital filter is clocked at a rate higher than that of the delta modulation encoder. Thus, as it is proved, a considerable reduction of
N. Kouvaras, J. Karakatsanis
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Quantization and Source Coding for Graph Signal Processing
Die Graphsignalverarbeitung erlaubt, Daten auf unregelmäßigen Domänen – wie etwa auf Sensor- oder sozialen Netzwerken – darzustellen, anders als in der klassischen 1-D- oder 2-D-Signalverarbeitung. Die Frage der Quellkodierung von Graphsignalen auf diesen Domänen wurde jedoch bisher nicht ausreichend in der Literatur behandelt.In der vorliegenden ...openaire +1 more source
The Journal of the Acoustical Society of America, 1987
In previous studies, performance models were developed for a system composed of quantizers followed by an OR-ing device and an accumulator. In this article, a method is presented to determine the breakpoints and the levels of the quantizer by maximizing the detector efficacy. Asymptotic and finite sample performances are presented and compared with the
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In previous studies, performance models were developed for a system composed of quantizers followed by an OR-ing device and an accumulator. In this article, a method is presented to determine the breakpoints and the levels of the quantizer by maximizing the detector efficacy. Asymptotic and finite sample performances are presented and compared with the
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2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004
The operation of digital signal processors in continuous time is discussed. It is shown that the main advantages of digital arithmetic can be maintained in such operations, while aliasing of the signal and the quantization error is avoided altogether. Continuous-time operation makes possible a smaller number of bits for a given signal-to-quantization ...
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The operation of digital signal processors in continuous time is discussed. It is shown that the main advantages of digital arithmetic can be maintained in such operations, while aliasing of the signal and the quantization error is avoided altogether. Continuous-time operation makes possible a smaller number of bits for a given signal-to-quantization ...
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