An 81.6 dB SNDR 15.625 MHz BW Third-Order CT SDM With a True Time-Interleaving Noise-Shaping Quantizer
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3228760
Abstract: This work introduces a time-interleaved architecture to tackle the speed-resolution bottleneck of the noise-shaping (NS) successive approximation register (SAR) quantizer in a continuous-time (CT) sigma-delta modulator (SDM). A critical insight is that introducing a delay… read more here.
Keywords: time; sndr 625; 625 mhz; quantizer ... See more keywords
Design of Optimal Entropy-Constrained Unrestricted Polar Quantizer for Bivariate Circularly Symmetric Sources
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DOI: 10.1109/tcomm.2017.2789221
Abstract: This paper proposes an algorithm for the design of entropy-constrained unrestricted polar quantizer (ECUPQ) for bivariate circularly symmetric sources. The algorithm is globally optimal for the class of ECUPQs with magnitude quantizer thresholds confined to… read more here.
Keywords: quantizer; tex math; bivariate circularly; inline formula ... See more keywords
An 18.1 mW 50 MHz-BW 76.4 dB-SNDR CTSDM With PVT-Robust VCO Quantizer and Latency-Free Background-Calibrated DAC
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2022.3192465
Abstract: This paper presents a continuous-time sigma-delta modulator (CTSDM) with a voltage-controlled-oscillator-based (VCO-based) integrating quantizer. A background replica-based calibration technique is proposed to alleviate the impact of the process, voltage supply, and temperature (PVT) variations on… read more here.
Keywords: vco; ctsdm; free background; quantizer ... See more keywords
An Adaptive Two-Level Quantizer for Networked Control Systems
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DOI: 10.1109/tcst.2016.2574768
Abstract: This brief proposes a novel adaptive two-level quantizer, which generates 1-b per sample and can be used for a class of industrial networked control systems (NCSs). The adaptive quantizer is introduced to automatically estimate the… read more here.
Keywords: adaptive two; two level; control systems; control ... See more keywords
A Hardware-Efficient Vector Quantizer Based on Self-Organizing Map for High-Speed Image Compression
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DOI: 10.3390/app7111106
Abstract: This paper presents a compact vector quantizer based on the self-organizing map (SOM), which can fulfill the data compression task for high-speed image sequence. In this vector quantizer, we solve the most severe computational demands… read more here.
Keywords: compression; image; vector quantizer; speed ... See more keywords