A Driving Technique for AC-AC Direct Matrix Converters Based on Sigma-Delta Modulation [PDF]
Energies, 2019 Direct conversion of AC power between three-phase systems operating at different frequencies can be achieved using solid-state circuits known as matrix converters.
Simone Orcioni +3 more
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Spatial Sigma-Delta Modulation for Coarsely Quantized Massive MIMO Downlink: Flexible Designs by Convex Optimization [PDF]
IEEE Open Journal of Signal Processing, 2023 This article considers the context of multiuser massive MIMO downlink precoding with low-resolution digital-to-analog converters (DACs) at the transmitter. This subject is motivated by the consideration that it is expensive to employ high-resolution DACs
Wai-Yiu Keung, Wing-Kin Ma
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Enhanced Digital Halftoning via Weighted Sigma-Delta Modulation [PDF]
SIAM Journal of Imaging Sciences, 2022 In this paper, we study error diffusion techniques for digital halftoning from the perspective of 1-bit Sigma-Delta quantization. We introduce a method to generate Sigma-Delta schemes for two-dimensional signals as a weighted combination of its one ...
Felix Krahmer, Anna Veselovska
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Description of a 2-Bit Adaptive Sigma-Delta Modulation System with Minimized Idle Tones [PDF]
EURASIP Journal on Advances in Signal Processing, 2007 A 2-bit adaptive sigma delta modulation system that inherently eliminates the idle tones present in conventional and other adaptive sigma delta systems is described.
G. S. Tombras, E. A. Prosalentis
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Low-Pressure Small MEMS Accelerometer Using Sigma-Delta Modulation [PDF]
Proceedings, 2018 Encapsulation of MEMS accelerometers in vacuum is advantageous, since it allows integration with other sensors, leading to size and cost reduction. One technique to operate MEMS accelerometers in vacuum is the use of closed-loop Sigma-Delta modulation ...
Vasco Lima +3 more
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Common-Mode Voltage Mitigation Strategies Using Sigma–Delta Modulation in Five-Phase VSIs
IEEE transactions on power electronics, 2022 Various sigma–delta ($\Sigma$$\Delta$) modulation techniques for reducing the maximum peak-to-peak amplitude of common-mode voltage (CMV) by 80% in a five-phase, high-frequency voltage source inverter (VSI) are proposed and evaluated in this article ...
Fernando Acosta-Cambranis +4 more
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Computationally efficient low-power sigma delta modulation-based image processing algorithm
Mehran University Research Journal of Engineering and Technology, 2023 Digital Image Processing has dominated Digital Signal Processing at the cost of more memory, resources, and high computational power. In image processing, filtering transformations and other operations need complex multiplications, and the multiplier is ...
Aneela Pathan +3 more
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Design Optimization of Feedforward Equalization for Mobile Fronthaul Based on Delta-Sigma Modulation With High-Order QAM Signals [PDF]
IEEE Photonics JournalDelta-sigma modulation can be used as a high spectral efficiency interface in place of conventional common public radio interface (CPRI) in mobile fronthaul (MFH) networks.
Jianghao Li +2 more
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Hexagonal Sigma-Delta modulation
IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 2003 A novel application and generalization of sigma-delta (/spl Sigma//spl Delta/) modulation has emerged in three-phase power-electronic converters. A conventional /spl Sigma//spl Delta/ modulator with scalar signals and binary quantizer is generalized to a /spl Sigma//spl Delta/ modulator with vector signals and a hexagonal quantizer.
G.A. Luckjiff, Ian Dobson
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Sigma Delta Modulation Based Ternary FIR Filter Mapping on FPGA [PDF]
Mehran University Research Journal of Engineering and Technology, 2011 In this paper single-bit SDM (Sigma Delta Modulation) based TFF (Ternary FIR Filter) with balanced ternary coefficients (i.e. -1/0/+1) has been mapped on small commercially available FPGAs (Field Programmable Gate Arrays).
Tayabuddin Memon +2 more
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