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9 Results Found

  • Article
  • Open Access
3 Citations
2,957 Views
21 Pages

11 October 2021

In this paper, we propose rate-splitting (RS) multiple access to mitigate the effects of quantization noise (QN) inherent in low-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). We consider the downlink (DL) of...

  • Article
  • Open Access
2,666 Views
15 Pages

This paper presents an analog delay-locked loop (DLL) with a digital coarse lock and error compensation, designed to enhance locking speed in duty-cycled operation while ensuring reliability. To accelerate coarse locking speed and prevent coarse lock...

  • Article
  • Open Access
7 Citations
2,856 Views
16 Pages

Analysis and Optimization for Downlink Cell-Free Massive MIMO System with Mixed DACs

  • Meng Zhou,
  • Yao Zhang,
  • Xu Qiao,
  • Weiqiang Tan and
  • Longxiang Yang

8 April 2021

This paper concentrates on the rate analysis and optimization for a downlink cell-free massive multi-input multi-output (MIMO) system with mixed digital-to-analog converters (DACs), where some of the access points (APs) use perfect-resolution DACs, w...

  • Article
  • Open Access
2 Citations
2,008 Views
17 Pages

7 October 2023

With the explosive growth of micro-video applications, the transmission burden of fronthaul and backhaul links is increasing, and meanwhile, a lot of energy consumption is also generated. For reducing energy consumption and transmission delay burden,...

  • Article
  • Open Access
5,272 Views
13 Pages

27 February 2023

This paper presents a design methodology for a low-power, low-chip-area, and high-resolution successive approximations register (SAR) analog-to-digital converter (ADC). The proposed method includes a segmented capacitive DAC (C-DAC) to reduce the pow...

  • Article
  • Open Access
5 Citations
5,498 Views
15 Pages

A 10- and 12-Bit Multi-Channel Hybrid Type Successive Approximation Register Analog-to-Digital Converter for Wireless Power Transfer System

  • Behnam Samadpoor Rikan,
  • Sang-Yun Kim,
  • Hamed Abbasizadeh,
  • Arash Hejazi,
  • Reza E. Rad,
  • Khuram Shehzad,
  • Keum Cheol Hwang,
  • Youngoo Yang,
  • Minjae Lee and
  • Kang-Yoon Lee

8 October 2018

This paper presents a successive approximation register (SAR) analog-to-digital converter (ADC) designed for a wireless power transfer system. This is a four–channel SAR ADC structure with 10-bit resolution for each channel, which can also be a...

  • Article
  • Open Access
4,388 Views
9 Pages

In this paper, a ΔΣ analog-to-digital converter (ADC) was designed and measured for broadband and high-resolution applications by applying the simple circuit technique to alleviate the feedback timing of input feed-forward architecture. W...

  • Article
  • Open Access
8 Citations
4,470 Views
16 Pages

1 May 2020

This study investigated wideband waveform generation using a field programmable gate array (FPGA) for X-band high-resolution synthetic aperture radar (SAR). Due to the range resolution determined by the bandwidth, we focused on wide bandwidth generat...

  • Article
  • Open Access
1 Citations
2,099 Views
12 Pages

An 88 dB SNDR 100 kHz BW Sturdy MASH Delta-Sigma Modulator Using Self-Cascoded Floating Inverter Amplifiers

  • Xirui Hao,
  • Yidong Yuan,
  • Jie Pan,
  • Zhaonan Lu,
  • Shuang Song,
  • Xiaopeng Yu and
  • Menglian Zhao

29 September 2024

Battery-powered Internet-of-Things applications require high-resolution, energy-efficient analog-to-digital converters (ADCs). There are still limited works on sub-MHz-bandwidth ADC designs. This paper presents a sturdy multi-stage shaping (SMASH) di...