Results 1 to 10 of about 12,363 (221)
Frontiers in Medicine, 2022 Chromatic dispersion is a common problem to degrade the system resolution in optical coherence tomography (OCT). This study is to develop a deep learning network for automated dispersion compensation (ADC-Net) in OCT.
Shaiban Ahmed +6 more
doaj +1 more source
Dynamic ADC Resolution-Mapping for Millimeter-Wave Massive MIMO Systems
IEEE Access, 2021 The radio-frequency (RF) chains, phase shifters (PSs), and analog-to-digital converters (ADCs) play the dominant role of power consumption in the uplink hybrid millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) networks.
Chia-Chang Hu +2 more
doaj +1 more source
Scan Time Reduction of PLCs by Dedicated Parallel-Execution Multiple PID Controllers Using an FPGA
Sensors, 2022 A programmable logic controller (PLC) executes a ladder diagram (LD) using input and output modules. An LD also has PID controller function blocks. It contains as many PID function blocks as the number of process parameters to be controlled.
Gnanasekaran Dhanabalan +2 more
doaj +1 more source
A Folding Approach for Multiple Antenna Arrays Using Low-Resolution ADCs
IEEE Open Journal of the Communications Society, 2022 Both massive multiple-input multiple-output (MIMO) and millimeter wave (mmWave) systems are receiving much attention for 5G and beyond-5G wireless access.
Jing Guo +4 more
doaj +1 more source
IEEE Access, 2021 A low-power 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) with split-capacitor, nonbinary-weighted, and multiple-least-significant-bit (LSB)-redundant capacitor digital-to-analog converters (CDACs) is proposed.
Hsuan-Lun Kuo, Chih-Wen Lu, Poki Chen
doaj +1 more source
A 12-Bit 2 GS/s Single-Channel High Linearity Pipelined ADC in 40 nm CMOS
Micromachines, 2023 This paper presents a single-channel 12-bit, 2 GS/s pipelined analog-to-digital converter (ADC) for wideband sampling receivers. The design adopts a novel source follower input buffer with multiple feedback loops to improve sample linearity and extend ...
Feitong Wu +7 more
doaj +1 more source
Pre-modulated multi-coset sampling system
Dianzi Jishu Yingyong, 2022 At present, the compressed sampling system mainly includes three sampling system: random demodulator，modulated wideband converter and multi-coset sampling, among them, the system framework of multi-coset sampling is simple and has a high reconstruction ...
Huang Zhen, Bai Zhengyao
doaj +1 more source
IEEE Access, 2021 In this paper, we propose two deep-learning based uplink channel estimation approaches that can utilize not only high-resolution-ADC-quantized but also low-resolution-ADC-quantized received pilot signals to improve estimation performance for mixed analog-
Jin Zicheng +4 more
doaj +1 more source
Deep Learning-Based Channel Estimation for mmWave Massive MIMO Systems in Mixed-ADC Architecture
Sensors, 2022 Millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems can significantly reduce the number of radio frequency (RF) chains by using lens antenna arrays, because it is usually the case that the number of RF chains is often much ...
Rui Zhang +4 more
doaj +1 more source
IEEE Access, 2021 Nowadays, large-scale multiple-input multiple-output (LS-MIMO) with low-resolution analog-to-digital converters (ADCs) is a favorable transmission scheme for 5G and beyond wireless networks to reduce the power consumption of the radio frequency chains ...
Hung N. Dang +2 more
doaj +1 more source