A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter with Hysteresis-Voltage-Controlled Techniques
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3183028
Abstract: A low-noise fast-transient-response second-order delta-sigma-modulation buck converter with hysteresis-voltage-controlled techniques is proposed. With the proposed control approach, the transient time can be accelerated by roughly 60%. The rail-to-rail OTA generates a current ISense, which replicates… read more here.
Keywords: hysteresis voltage; delta sigma; sigma modulation; voltage controlled ... See more keywords
Digital OFDM-PON Based on Delta–Sigma Modulation Employing Binary IM-DD Channels
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2016.2639040
Abstract: In this paper, a delta–sigma modulation is proposed for the orthogonal frequency division multiplexed-passive optical network (OFDM-PON) to enable transmission of OFDM signals via binary intensity modulation and direct detection (IM-DD) channels. The delta–sigma modulation… read more here.
Keywords: ofdm pon; delta sigma; sigma modulation;
Hybrid fiber-THz fronthaul supporting up to 16384-QAM-OFDM with the delta-sigma modulation.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.466080
Abstract: With the progress of high-capacity radio access networks, ultra-dense small cells are rapidly being deployed in urban areas. As a result, the deployment of a large number of optical fibers in urban areas becomes a… read more here.
Keywords: thz; modulation; delta sigma; fiber ... See more keywords
Demonstration of 4096QAM THz MIMO wireless delivery employing one-bit delta-sigma modulation.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.477155
Abstract: We experimentally demonstrate 2-Gbaud 4096-ary quadrature amplitude modulation (4096QAM) signal transmission over 2-m wireless distance at 370 GHz in a photonics-aided terahertz (THz)-wave communication system. By using one-bit quantized delta-sigma modulation (DSM) and photonics-aided technology, we… read more here.
Keywords: thz; modulation; delta sigma; one bit ... See more keywords
W-band RoF polarization multiplexing system supports 1048576 QAM with delta-sigma modulation.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.487672
Abstract: We propose and experimentally verify a photonics-aided W-band millimeter wave (MMW) radio-over-fiber (RoF) polarization-multiplexed envelope detection system for high-order quadrature amplitude modulation (QAM) signals. To solve the problem of low spectral efficiency of common public… read more here.
Keywords: system; delta sigma; qam; rof polarization ... See more keywords