Large-signal dynamics of an ultrafast semiconductor laser at digital modulation rates approaching 10 Gbit/s [PDF]
, 1985 High-fidelity pseudorandom digital modulation at 8.2 Gbit/s of an ultrahigh speed semiconductor laser is demonstrated. Studies using simple but representative pulse patterns at 10 Gbit/s give insights into the maximum digital modulation rate attainable ...
Lau, K. Y., Yariv, A.
core +1 more source
Enhancing the Dynamic Range of OFDM Radars Using Non-Linear Operation and Symbol-Based Equalization
IEEE Journal of Microwaves, 2023 Due to the increased flexibility in terms of waveform generation, digitally-modulated radar systems are gaining increasing popularity among research and academia.
Rossen Michev +3 more
doaj +1 more source
Low power all-digital radio-over-fiber transmission for 28-GHz band using parallel electro-absorption modulators [PDF]
, 2020 We present a low-power all-digital radio-over-fiber transmitter for beyond 28-GHz using sigma-delta modulation, a 140mW NRZ driver and parallel electro-absorption modulators. 5.25Gb/s (2.625Gb/s) 64-QAM is transported over 10-km SSMF at 1560nm with 7.6% (
Bauwelinck, Johan +12 more
core +2 more sources
Symbol and Bit Error Rates Analysis of Hybrid PIM-CDMA
EURASIP Journal on Wireless Communications and Networking, 2005 A hybrid pulse interval modulation code-division multiple-access (hPIM-CDMA) scheme employing the strict optical orthogonal code (SOCC) with unity and auto- and cross-correlation constraints for indoor optical wireless communications is proposed. In this
Ghassemlooy Z., See C. K.
doaj +2 more sources
Analysis of MSK jamming effectiveness based on effective jamming coefficient
Tongxin xuebao, 2022 For the problem of communication jamming effectiveness, an effective jamming coefficient was proposed as an evaluation metric based on the correlation between jamming and communication signals, and the impact of orthogonal receivers was analyzed ...
Zengmao CHEN +3 more
doaj
A Nuclear Magnetic Resonance Radiofrequency Pulse Transmitter Based on Digital Modulation Technology
Chinese Journal of Magnetic Resonance, 2018 Radiofrequency (RF) pulse transmitter is an important part of a nuclear magnetic resonance (NMR) spectrometer. In this paper, a simple NMR RF pulse transmitter was designed based on field programmable gate array (FPGA) and direct digital synthesis (DDS ...
ZHU Yun-feng +6 more
doaj +1 more source
Frontiers in Immunology, 2021 Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of myeloid progenitor cells that dampen overwhelming adaptive immune responses through multiple mechanisms and are recognized as an attractive novel immune intervention therapy for ...
Jasmin Scheurer +7 more
doaj +1 more source
A study of discrete wavelet transform based denoising to reduce the effect of artificial light interferences for indoor optical wireless communication [PDF]
, 2010 The optical power penalty (OPP) due to the artificial light interferences (ALIs) can be significantly high in an indoor optical wireless communication (OWC) channel making such link practically infeasible.
Angelova, Maia +2 more
core +1 more source
PVDF-based dielectric polymers and their applications in electronic materials
IET Nanodielectrics, 2018 The attractive dielectric poly(vinylidene fluoride) (PVDF) and its copolymers are well confirmed possessing the highest electroactive response including dielectric constant, piezoelectric and ferroelectric effects, which have increasingly wide range of ...
Weimin Xia, Zhicheng Zhang
doaj +1 more source
Spectral characteristics of DDPM streams and their application to all‐digital amplitude modulation
Electronics Letters, 2021 A new closed‐form expression of the spectral coefficients of the digital streams obtained by dyadic digital pulse modulation is presented and validated in this letter.
P. S. Crovetti
doaj +1 more source