Distributed multi-user MIMO transmission using real-time sigma-delta-over-fiber for next generation fronthaul interface [PDF]
, 2020 To achieve the massive device connectivity and high data rate demanded by 5G, wireless transmission with wider signal bandwidths and higher-order multiple-input multiple-output (MIMO) is inevitable. This work demonstrates a possible function split option
Bauwelinck, Johan +7 more
core +1 more source
New pulse modulator with low switching frequency
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014 The author presents an integrating pulse modulator (analogue signal converter) with the pulse frequency and duration modulation similar to sigma-delta modulation (with low switching frequency), without quantization.
V. S. Golub
doaj +1 more source
Colored-Gaussian Multiple Descriptions: Spectral and Time-Domain Forms [PDF]
, 2016 It is well known that Shannon's rate-distortion function (RDF) in the colored quadratic Gaussian (QG) case can be parametrized via a single Lagrangian variable (the "water level" in the reverse water filling solution).
Kochman, Yuval +2 more
core +2 more sources
Digital calibration technique based AC injection for continuous‐time sigma‐delta converters
Electronics Letters, 2023 In this study, a digital calibration method applicable for a continuous‐time sigma‐delta analogue‐to‐digital converter is proposed using the AC injection technique.
Shengling Zhu, Lei Chen, Jie Su
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Calibration of DAC mismatch errors in sigma delta ADCs based on a sine-wave measurement [PDF]
, 2013 We present an offline calibration procedure to correct the nonlinearity due element mismatch in the digital-to-analog converter (DAC) of a multibit Sigma Delta-modulation A/D converter.
De Bock, Maarten +4 more
core +1 more source
A describing function study of saturated quantization and its application to the stability analysis of multi-bit sigma delta modulators [PDF]
, 2013 Just as their single-bit counterparts, multi-bit sigma delta modulators exhibit nonlinear behavior due to the presence of the quantizer in the loop. In the multi-bit case this is caused by the fact that any quantizer has a limited output range and hence ...
De Bock, Maarten +3 more
core +1 more source
Performance Scrutiny of Two Control Schemes Based on DSM and HB in Active Power Filter [PDF]
Journal of Operation and Automation in Power Engineering, 2014 This paper presents a comparative analysis between two current control strategies, constant source power and generalized Fryze current, used in Active Power Filter (APF) applications having three different modulation methods. The Hysteresis Band (HB) and
R. Kazemzadeh +3 more
doaj
A ΣΔ Closed-Loop Interface for a MEMS Accelerometer with Digital Built-In Self-Test Function
Micromachines, 2018 Sigma-delta (ΣΔ) closed-loop operation is the best candidate for realizing the interface circuit of MEMS accelerometers. However, stability and reliability problems are still the main obstacles hindering its further development for high-end ...
Dongliang Chen +5 more
doaj +1 more source
Analogue to Digital and Digital to Analogue Converters (ADCs and DACs): A Review Update [PDF]
, 2016 This is a review paper updated from that presented for CAS 2004. Essentially, since then, commercial components have continued to extend their performance boundaries but the basic building blocks and the techniques for choosing the best device and ...
Pickering, J.
core +3 more sources
Dual-Resonator MEMS Magnetometer Based on Self-Clocking Sigma-Delta Modulation
IEEE Sensors Journal, 2020 This paper presents the design and experimental evaluation of a micromachined Lorentz force magnetometer with a dual-resonator structure, interfaced with an electromechanical sigma-delta modulation (EM- $\Sigma \Delta {\text {M}}$ ) force rebalancing ...
Fang Chen +4 more
semanticscholar +1 more source