Relevant bibliographies by topics / Signal to Quantization Noise Ratio (SQNR)

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  2. Dissertations / Theses
  3. Books
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Academic literature on the topic 'Signal to Quantization Noise Ratio (SQNR)'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Signal to Quantization Noise Ratio (SQNR)"

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Lucks, Marcio Barbosa, and Heuller A. C. Procópio. "Analysis of Companding Techniques Applied to Onboard Telemetry Systems." Applied Mechanics and Materials 232 (November 2012): 915–18. http://dx.doi.org/10.4028/www.scientific.net/amm.232.915.

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In order to increase the dynamic range and the signal-to-quantization noise ratio (SQNR) of telecommunication systems, companding techniques were developed, such as the μ-law and the A-law. These techniques allow a non-uniform quantization of the signal using a compressor circuit followed by a uniform quantizer in the transmitter and the reconstruction of the original signal on the receiver by means of an expander circuit. Some types of signals monitored during the flight of sounding vehicles and satellite launchers have a very wide dynamic range. In this paper, we propose and analyze the use
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Hasso, Alaaldin, and Karwan Jacksi. "Effects of Rounding and Truncating Methods of Quantization Error and SQNR for Sine Signal." Journal of Applied Science and Technology Trends 1, no. 1 (2020): 08–12. http://dx.doi.org/10.38094/jastt113.

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Within the Analog to Digital Conversion (ADC), quantization noise is a duplicate of a Quantization Error (QE) which is introduced by quantization. In signal processing and telecommunication systems, the noise is non-linear and depends on the signal type. During the analog, Sine signal converts to the digital (ADC) process, the two methods are used Rounding and Truncating in-order to eliminate the error produced in the digitization process. The rounding method quantize assigns each sample of sine signal to the nearest quantization level. However, making the Truncating would have assigned each s
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Liu, Wen Yan, Bin Zhang, Long Chen, Chao Gao, and Xiao Wei Liu. "A High-Performance Mash Fourth-Order Sigma-Delta Modulator." Key Engineering Materials 503 (February 2012): 207–10. http://dx.doi.org/10.4028/www.scientific.net/kem.503.207.

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This paper reports on a system level design and analysis of a mash fourth-order sigma-delta (ΣΔ) modulator. Compared with a high-order single-loop ΣΔ modulator (ΣΔM), there’s no need to consider about the system stability of a mash ΣΔM, which has the advantages of better signal to quantization noise ratio (SQNR). System level simulation results indicate that the SQNR is 122.0 dB, and the effective number of bits (ENOB) is 19.97 bits when the over sampling ratio (OSR) is 128.
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Denić, Bojan, Zoran Perić, Vladimir Despotović, Nikola Vučić, and Predrag Petrović. "Dual-mode quasi-logarithmic quantizer with embedded G.711 codec." Journal of Electrical Engineering 69, no. 1 (2018): 46–51. http://dx.doi.org/10.1515/jee-2018-0006.

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Abstract The G.711 codec has been accepted as a standard for high quality coding in many applications. A dual-mode quantizer, which combines the nonlinear logarithmic quantizer for restricted input signals and G.711 quantizer for unrestricted input signals is proposed in this paper. The parameters of the proposed quantizer are optimized, where the minimal distortion is used as the criterion. It is shown that the optimized version of the proposed quantizer provides 5.4 dB higher SQNR (Signal to Quantization Noise Ratio) compared to G.711 quantizer, or equivalently it performs savings in the bit
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Li, Yao Guang, Xiao Wei Liu, Yan Xiao, and Yun Tao Liu. "A High-Performance Fourth-Order Sigma-Delta Micromachined Accelerometer." Key Engineering Materials 483 (June 2011): 422–26. http://dx.doi.org/10.4028/www.scientific.net/kem.483.422.

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This paper reports on a system level design and analysis of a single-loop fourth-order sigma-delta (ΣΔ) accelerometer. Compared with a second-order single-loop ΣΔ modulator (ΣΔM) formed by the sensing element here the sensing element is cascaded with two extra electronic integrators to form the fourth ΣΔM, which has the advantages of better signal to quantization noise ratio (SQNR). System level simulation results indicate that the SQNR is 96.86 dB, and the effective number of bits (ENOB) is 15.8 bits when the over sampling ratio (OSR) is 128. Stability of the system is analyzed by root locus
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Yin, Y., H. Klar, and P. Wennekers. "A 8X Oversampling Ratio, 14bit, 5-MSamples/s Cascade 3-1 Sigma-delta Modulator." Advances in Radio Science 3 (May 12, 2005): 277–80. http://dx.doi.org/10.5194/ars-3-277-2005.

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Abstract. A 14-b, 5-MHz output-rate cascaded 3-1 sigma-delta analog-to-digital converters (ADC) has been developed for broadband communication applications, and a novel 4th-order noise-shaping is obtained by using the proposed architecture. At a low oversampling ratio (OSR) of 8, the ADC achieves 91.5dB signal-to-quantization ratio (SQNR), in contrast to 71.8dB of traditional 2-1-1 cascaded sigma-delta ADC in 2.5-MHz bandwidth and over 80dB signal-to-noise and distortion (SINAD) even under assumptions of awful circuit non-idealities and opamp non-linearity. The proposed architecture can potent
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Petković, Goran, Zoran Perić, and Vladimir Despotović. "SWITCHED UNIFORM SCALAR QUANTIZATION ADAPTED TO MEAN AND VARIANCE FOR SPEECH CODING." Facta Universitatis, Series: Automatic Control and Robotics 16, no. 3 (2018): 263. http://dx.doi.org/10.22190/fuacr1703263p.

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Average power and variance are widely used in adaptation techniques in signal coding. A speech signal is usually assumed to be zero-mean; thus an average signal power is equal to the signal variance. However, this assumption is valid only for longer signals with a large number of samples. When the signal is divided into frames (especially if the number of samples within the frame is small) the speech signal within the frame may not be zero-mean. Hence, frame-by-frame adaptation to signal mean might be beneficial. A switched uniform scalar quantizer with adaptation to signal mean and variance i
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Savić, Milan S., Zoran H. Perić, Stefan R. Panić, and Aleksandar V. Mosić. "Semi–logarithmic and hybrid quantization of Laplacian source inwide range of variances." Journal of Electrical Engineering 63, no. 6 (2012): 386–91. http://dx.doi.org/10.2478/v10187-012-0057-z.

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A novel semilogarithmic hybrid quantizer for non-uniform scalar quantization of Laplacian source, which consist of uniform quantizer and companding quantizer is introduced. Uniform quantizer has unit gain in area around zero. Companding quantizer is defined with a novel logarithm characteristic. Also an analysis of classic semilogarithmic A-law for various values of A parameter is provided. Comparation with classic semilogarithmic A-law is performed. The main advantage of hybrid quantizer is that number of representation levels for both uniform and companding quantizer are not unambiguously de
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Denić, Bojan, Zoran Perić, Milan Dinčić, Sofija Perić, Nikola Simić, and Marko Anđelković. "Switched 32-Bit Fixed-Point Format for Laplacian-Distributed Data." Information 16, no. 7 (2025): 574. https://doi.org/10.3390/info16070574.

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The 32-bit floating-point (FP32) format has many useful applications, particularly in computing and neural network systems. The classic 32-bit fixed-point (FXP32) format often introduces lower quality of representation (i.e., precision), making it unsuitable for real deployment, despite offering faster computations and reduced computational cost, which positively impacts energy efficiency. In this paper, we propose a switched FXP32 format able to compete with or surpass the widely used FP32 format across a wide variance range. It actually proposes switching between the possible values of key p
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Perić, Zoran H., Lazar Z–. Velimirović, and Milan R. Dinčić. "Improved Linearization of the Optimal Compression Function for Laplacian Source." Journal of Electrical Engineering 65, no. 3 (2014): 179–83. http://dx.doi.org/10.2478/jee-2014-0028.

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Abstract In this paper, linearization of the optimal compression function is done and hierarchical coding (by coding the regions firstly and then the cells inside the region) is applied, achieving simple and fast process of coding and decoding. The signal at the entrance of the scalar quantizer is modeled by Laplacian probability density function. It is shown that the linearization of inner regions very little influences distortion and therefore only the last region should be optimized. Two methods of optimization of the last region are proposed, that improve performances of the scalar quantiz
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Dissertations / Theses on the topic "Signal to Quantization Noise Ratio (SQNR)"

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Krone, Stefan, and Gerhard Fettweis. "Communications with 1-Bit Quantization and Oversampling at the Receiver: Benefiting from Inter-Symbol-Interference." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-101473.

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1-bit analog-to-digital conversion is very attractive for low-complexity communications receivers. A major drawback is, however, the small spectral efficiency when sampling at symbol rate. This can be improved through oversampling by exploiting the signal distortion caused by the transmission channel. This paper analyzes the achievable data rate of band-limited communications channels that are subject to additive noise and inter-symbol-interference with 1-bit quantization and oversampling at the receiver. It is shown that not only the channel noise but also the inter-symbol-interference can be
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Krone, Stefan, and Gerhard Fettweis. "Communications with 1-Bit Quantization and Oversampling at the Receiver: Benefiting from Inter-Symbol-Interference." Technische Universität Dresden, 2012. https://tud.qucosa.de/id/qucosa%3A26362.

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1-bit analog-to-digital conversion is very attractive for low-complexity communications receivers. A major drawback is, however, the small spectral efficiency when sampling at symbol rate. This can be improved through oversampling by exploiting the signal distortion caused by the transmission channel. This paper analyzes the achievable data rate of band-limited communications channels that are subject to additive noise and inter-symbol-interference with 1-bit quantization and oversampling at the receiver. It is shown that not only the channel noise but also the inter-symbol-interference can be
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Shang, Lei, and lei shang@ieee org. "Modelling of Mobile Fading Channels with Fading Mitigation Techniques." RMIT University. Electrical and Computer Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20061222.113303.

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This thesis aims to contribute to the developments of wireless communication systems. The work generally consists of three parts: the first part is a discussion on general digital communication systems, the second part focuses on wireless channel modelling and fading mitigation techniques, and in the third part we discuss the possible application of advanced digital signal processing, especially time-frequency representation and blind source separation, to wireless communication systems. The first part considers general digital communication systems which will be incorporated i
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Yu, Yu-Chieh, and 游育潔. "Signal to Quantization Noise Ratio (SQNR) monitoring system based on the hardware-software integration platform." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6p3a8m.

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碩士<br>中原大學<br>資訊工程研究所<br>106<br>We hope to use the custom mechanism to intercept the required word length and coordinate the integration of hardware-software communication in the planning and application of this research. Let the software side have the main execution ability can transmit the input sequence and pass it back to calculate the result of the Signal to Quantization Noise Ratio (SQNR). We can observe the change of the values when the achieved the request and the reasonable SQNR value. But you can control or adjust the hardware architecture to achieve the acceleration with the least a
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Silva, Eduardo. "A unified framework for the analysis and design of networked control systems." Thesis, 2009. http://hdl.handle.net/1959.13/34256.

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Research Doctorate - Doctor of Philosophy (PhD)<br>This thesis studies control systems with communication constraints. Such constraints arise due to the fact that practical control systems often use non-transparent communication links, i.e., links subject to data-rate constraints, random data-dropouts or random delays. Traditional control theory cannot deal with such constraints and the need for new tools and insights arises. We study two problems: control with average data-rate constraints and control over analog erasure channels with i.i.d. dropout profiles. When focusing on average data-rat
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Silva, Eduardo. "A unified framework for the analysis and design of networked control systems." 2009. http://hdl.handle.net/1959.13/34256.

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Research Doctorate - Doctor of Philosophy (PhD)<br>This thesis studies control systems with communication constraints. Such constraints arise due to the fact that practical control systems often use non-transparent communication links, i.e., links subject to data-rate constraints, random data-dropouts or random delays. Traditional control theory cannot deal with such constraints and the need for new tools and insights arises. We study two problems: control with average data-rate constraints and control over analog erasure channels with i.i.d. dropout profiles. When focusing on average data-rat
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Кобяков, А. В., та A. V. Kobyakov. "Разработка схем управления зеркальными антеннами 600 метрового радиотелескопа на основе цифровой обработки сигналов : магистерская диссертация". Master's thesis, 2017. http://hdl.handle.net/10995/54217.

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В данной работе представлена разработка схемы управления зеркальными антеннами 600 метрового радиотелескопа на основе цифровой обработки сигналов. Был произведен анализ диаграммы направленности радиотелескопа при цифровом методе формирования, а также оценено влияние фазовых ошибок на диаграмму направленности радиотелескопа, возникающих в процессе оцифровке аналогового сигнала на несущей частоте. Было произведено математическое моделирование и оценка влияния параметров цифровой элементной базы на характеристики диаграммы направленности радиотелескопа, предложено оборудование для построения ди
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Books on the topic "Signal to Quantization Noise Ratio (SQNR)"

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Sivathevan, T. Signal to quantization noise ratio. University of East London, 1994.

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Book chapters on the topic "Signal to Quantization Noise Ratio (SQNR)"

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Hilles, Shadi M. S., and Volodymyr P. Maidaniuk. "SOFM for Image Compression Based on Spatial Frequency Band-Pass Filter and Vector Quantization." In Handbook of Research on Intelligent Data Processing and Information Security Systems. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1290-6.ch016.

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This chapter presents image compression based on SOFM and vector quantization (VQ). The purpose of this chapter is to show the significance of SOFM with bandpass filter in process of image compression to increase compression ratio and to enhance image compression effectiveness. Image compression by SOFM model is presented and consists of three stages: The first is band-pass filter. The result experiments used Lena.bmp, girl256.bmp, and show compression in block image 16x16 given best compression ratio with a small signal-noise ratio (SNR).
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El-said, Shaimaa A., Khalid F. A. Hussein, and Mohamed M. Fouad. "Image Compression Technique for Low Bit Rate Transmission." In Intelligent Computer Vision and Image Processing. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-3906-5.ch015.

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A novel Adaptive Lossy Image Compression (ALIC) technique is proposed to achieve high compression ratio by reducing the number of source symbols through the application of an efficient technique. The proposed algorithm is based on processing the discrete cosine transform (DCT) of the image to extract the highest energy coefficients in addition to applying one of the novel quantization schemes proposed in the present work. This method is straightforward and simple. It does not need complicated calculation; therefore the hardware implementation is easy to attach. Experimental comparisons are car
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Sam Jeeva Raj Edward Jero and Ramu Palaniappan. "ECG Steganography Using Contourlet Transform For Transmission of Secured Patient Identity." In Cryptology and Information Security Series. IOS Press, 2016. https://doi.org/10.3233/978-1-61499-617-0-131.

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ECG steganography hides patient data inside their ECG signal to ensure the protection of patient's identity. In this work, an attempt has been made to evaluate ECG Steganography where Quantization Index Modulation (QIM) method is used to embed patient data into the Contourlet transform coefficients of ECG image. Tompkins QRS detection algorithm is used to construct ECG image and which is decomposed into a series of multiscale, local and directional image expansion using contour segments. QIM scheme is applied on the appropriate coefficients of the selected frequency sub-bands. QIM divides the
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Conference papers on the topic "Signal to Quantization Noise Ratio (SQNR)"

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Perić, Sofija, Aleksandra Jovanović, Zoran Perić, and Jelena Nikolić. "Performance Analysis of Two-stage Uniform Quantization of Laplacian Data." In XVII International Conference on Systems, Automatic Control and Measurements. University of Niš, Faculty of Electronic Engineering, Faculty of Mechanical Engineering, Niš, 2024. https://doi.org/10.46793/saum24.047p.

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Residual quantization decomposes the quantization process into smaller ones, achieving a very small quantization error with significantly reduced computational costs. In this paper, we explore the application of the residual concept in two-stage uniform quantization (TSUQ). TSUQ employs two uniform quantizers, one in the first stage to quantize the value of the input data using R1 bits and the other in the second stage to quantize the residual error of the previous stage using R2 bits. We analyze the TSUQ of Laplacian data, covering the following aspects: i) we determine the signal to quantiza
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Perić, Zoran, Bojan Denić, and Milan Dinčić. "Performance Analysis of the 24-bits Floating-Point Format for a Gaussian Source." In International Conference IcETRAN. ETRAN Society, Academic Mind, Belgrade, 2024. https://doi.org/10.69994/11ic24036.

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The research conducted in this paper targets to examine the efficiency of the 24-bits floating-point (FP24) format on data modelled by the Gaussian distribution. To accomplish this goal, we exploit a connection that exists between binary formats and quantization, so we apply the objective measures such as distortion and SQNR (signal-to-quantization noise ratio) to estimate the performance of the FP24 format. In particular, performance investigation of this format is performed in the theoretical domain for both mean-squared error (MSE) and absolute error (AE) measures. Results for both metrics
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Bai, Lu, Wei Xu, Pingping Huang, and Weixian Tan. "Analysis of Low Bit Quantization and Signal-To-Noise Ratio Mismatch in Spaceborne SAR Azimuth Multi-Channel Signal Reconstruction." In 2023 5th International Academic Exchange Conference on Science and Technology Innovation (IAECST). IEEE, 2023. http://dx.doi.org/10.1109/iaecst60924.2023.10502910.

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Spencer, Mark F., and Douglas E. Thornton. "Quantization Error in Digital Holography." In Applications of Lasers for Sensing and Free Space Communications. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/lsc.2022.lstu3c.3.

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This paper uses the signal-to-noise ratio to analyze the effects of quantization error (aka digitization noise) in digital holography. Assuming a strong reference, the results show that quantization error depends on the pixel-well depth and the number of bits used for digitization.
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Mammone, R. J., and R. J. Rothacker. "Two dimensional image restoration using Linear Programming." In Signal Recovery and Synthesis. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/srs.1986.wa3.

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In this paper we address the issues involved in implementing the Linear Programming (LP) method of image restoration in two dimensions. A modified pivot strategy is introduced in order to reduce the number of iterations. This approach is necessary due to the number of arithmetic operations required per iteration for two dimensional data. We shall also discuss the effects of additive noise, such as that due to quantization. The effects of noise on the performance of restorations with both separable and nonseparable degradations will be presented. The performance of the LP approach has previousl
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S. Mahdi, Noor, and Ghadah K. AL-Khafaji. "Adaptive Color Image Compression Using ADJPEG and ISUQ of Hierarchical Decomposition Scheme." In 5TH INTERNATIONAL CONFERENCE ON COMMUNICATION ENGINEERING AND COMPUTER SCIENCE (CIC-COCOS'24). Cihan University-Erbil, 2024. http://dx.doi.org/10.24086/cocos2024/paper.1544.

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This paper introduced a lossy color compression system of transform coding (TC) based of discrete wavelet transform (DWT), discrete cosine transform (DCT) and quantization schemes to achieve high compression ratio (CR) with preserving quality. The proposed compression system comprises the following steps, firstly, separating the image into source/non source color bands, then quantizing the source band uniformity, followed by decomposing an image by a three-level DWT and applying huffman coding to the approximation sub band, and compressed the details sub bands of each level by iterative scalar
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Takahashi, Kanato, Masaomi Kimura, Imam Mukhlash, and Mohammad Iqbal. "A Method for Adversarial Example Generation Using Wavelet Transformation." In AHFE 2023 Hawaii Edition. AHFE International, 2023. http://dx.doi.org/10.54941/ahfe1004250.

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With the advance of Deep Neural Networks (DNN), the accuracy of various tasks in machine learning has dramatically improved. Image classification is one of the most typical tasks. However, various papers have pointed out the vulnerability of DNN.It is known that small changes to an image can easily makes the DNN model misclassify it. The images with such small changes are called adversarial examples. This vulnerability of DNN is a major problem in practical image recognition. There have been researches on the methods to generate adversarial examples and researches on the methods to defense DNN
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