Results 131 to 140 of about 4,232 (174)
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A Jitter and Power Analysis on DCO
IEEE Transactions on Circuits and Systems II: Express Briefs, 2011A jitter and power analysis on a digitally controlled oscillator (DCO) is presented in this brief. By analyzing variable capacitance components on each switching node of the DCO, a simple jitter and power model was derived in a closed form. The proposed mathematical analysis can be effectively used for the accurate and faster estimation of the DCO ...
Jongsun Park, Soo-Won Kim
exaly +2 more sources
A Class-D CMOS DCO with an on-chip LDO
ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC), 2014 This paper presents the co-design of a class-D digitally-controlled oscillator (DCO) and a low-dropout voltage regulator (LDO) generating the supply voltage for the DCO. Despite the high intrinsic supply pushing of the class-D oscillator topology, the LDO noise has only a very marginal impact on the DCO phase noise.
Luca Fanori +2 more
core +3 more sources
Recombination of HCO+ and DCO+ ions with electrons
International Journal of Mass Spectrometry, 2009Abstract Recombination of HCO+ and DCO+ ions with electrons was studied in afterglow plasma. The flowing afterglow with Langmuir probe (FALP) apparatus was used to measure the recombination rate coefficients and their temperature dependencies in the range 150–270 K.
I Korolov, R Plasil, T Kotrík
exaly +2 more sources
PAPR Reduction in DCO-OFDM Based WDM VLC [PDF]
Journal of Lightwave Technology, 2022 Visible light communication (VLC) can achieve high data rate transmission with multicarrier modulation techniques. The common variant is direct current (DC) optical orthogonal frequency division multiplexing (DCO-OFDM) which offers a spectral efficient ...
Hussien Theeb Alrakah +2 more
exaly +2 more sources
A 2.1 GHz, 210 μW, —189 dBc/Hz DCO with Ultra Low Power DCC Scheme
Electronics (Switzerland), 2021 This article presents a low power digital controlled oscillator (DCO) with an ultra low power duty cycle correction (DCC) scheme. The DCO with the complementary cross-coupled topology uses the controllable tail resistor to improve the tail current ...
Shi Zuo, Jianzhong Zhao
exaly +2 more sources
Interoperable CFP-DCO and CFP2-DCO Pluggable Optic Interfaces for 100G WDM Transmission
Optical Fiber Communication Conference (OFC) 2019, 2019For the first time, interoperability is demonstrated at 100G with modern CFP-DCO and CFP2-DCO interfaces using the newly standardized Staircase FEC between three vendors and two DSP-ASIC providers. Inter-workable 100G WDM transmission (up to 1200 km) and passive point-to-point interconnection (up to 135 km) are shown.
Erwan Pincemin +10 more
openaire +2 more sources
A 20kHz frequency resolution DCO
2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology, 2010This paper reports a Digitally Controlled Oscillator (DCO) with 20kHz frequency resolution. This is the first DCO implementing capacitor delta tuning and Dynamic Element Matching (DEM) to suppress process variations and mismatches between small capacitor deltas. The DCO is fabricated in 0.13µm CMOS IBM technology. The proposed DEM technique reduced the
Zhanjun Bai, Ralph Mason
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A Bluetooth Low Energy DCO in 28nm FDSOI
2020 43rd International Conference on Telecommunications and Signal Processing (TSP), 2020A 2.4 GHz digital-controlled oscillator (DCO) based on a novel capacitor tank suitable for all-digital Bluetooth Low Energy (BLE) transmitter is proposed in this paper. The capacitive element which is responsible for Gaussian Frequency Shift Keying (GFSK) modulation is constructed by a single nMOS device with simple topology, designed in a fully ...
Orfeas Panetas-Felouris +3 more
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BER Performance Comparison of DCO-OFDM and Convolutional Coded DCO-OFDM in IM/DD Systems
International Journal of Electronics, Communications, and Measurement Engineering, 2019Optical wireless communication (OWC) is an alternative technology to meet the demands of the exponentially-growing high data rate applications run by broadband users. The implementation of single carrier modulation techniques in OWC is an age old technology, but for the last few years research is focused towards the multicarrier modulation techniques ...
Jayasudha Koti, Braj Kishore Mishra
openaire +1 more source
Live demonstration: 150Mbps+ DCO-OFDM VLC
2016 IEEE International Symposium on Circuits and Systems (ISCAS), 2016This demonstration showcases the potential of OFDM-based Visible Light Communication (VLC) systems for indoor high-speed communications using off-the-shelf LEDs, suitable for illumination. The physical layer was implemented in a Xilinx Virtex-6 FPGA using System Generator.
Monica Figueiredo +2 more
openaire +1 more source