Efficient Parallel Carrier Recovery for Ultrahigh Speed Coherent QAM Receivers with Application to Optical Channels [PDF]
Journal of Electrical and Computer Engineering, 2013 This work presents a new efficient parallel carrier recovery architecture suitable for ultrahigh speed intradyne coherent optical receivers (e.g., ≥100 Gb/s) with quadrature amplitude modulation (QAM).
Pablo Gianni +3 more
doaj +4 more sources
Analysis of signal processing techniques for optical 112 Gb/s DP-QPSK receivers with experimental data [PDF]
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2011 This paper evaluates several signal processing techniques for optical dual-polarization quadrature phase-shift keying (DP-QPSK) coherent receivers, using offline post-processing of experimental data.
Thiago F. Portela +5 more
doaj +3 more sources
Blind Carrier Phase Recovery for General 2 Π/M-Rotationally Symmetric Constellations
International Journal of Wireless & Mobile Networks, 2012 14 pages, 12 figures, International Journal of Wireless & Mobile Networks (IJWMN)
Slimane, Emna Ben +2 more
openaire +3 more sources
Determining kinetic constants and transport efficiencies at membrane interfaces to optimize the removal/recovery of Cu(II) through lulk liquid membranes containing benzoylacetone as carrier [PDF]
, 2017 The removal, separation, and enrichment of heavy metals in aqueous solutions has become a prime concern over the last few decades because of both their adverse effects on the ecosystem and living organisms and their valuable resource character.
Gómez Gómez, Elisa +4 more
core +2 more sources
Carrier phase recovery of LDPC-coded systems based on the likelihood difference algorithm
EURASIP Journal on Advances in Signal Processing, 2023 The problem of blind phase offset recovery of low density parity-check (LDPC)-coded systems is considered in this paper. We propose a new algorithm of phase offset estimation that involves the computation and maximization of a likelihood difference (LD ...
Rodrigue Imad, Sebastien Houcke
doaj +1 more source
Research on Improved Costas Loop for High-order QAM [PDF]
Jisuanji gongcheng, 2017 In order to improve convergence speed and tracking stability for high-order Quadrature Amplitude Modulation(QAM) demodulation carrier recovery,a new kind of Costas loop is designed based on software radio thought and the basic principle of traditional ...
ZHOU Shengyuan,PAN Huilan
doaj +1 more source
Low-Complexity Blind Carrier Phase Recovery for C-mQAM Coherent Systems
IEEE Photonics Journal, 2019 A novel carrier phase recovery algorithm is proposed for coherent optical systems with circular multilevel quadrature amplitude modulation (C-mQAM). After amplitude segmentation and phase rotation, the particular distribution of the constellation points ...
Ping Zhang +6 more
doaj +1 more source
Micromachines, 2023 A photonics-assisted binary/quaternary phase-coded microwave signal generator with fundamental/doubling reconfigurable carrier frequency applicable to digital I/O interfaces is proposed and has been verified by experiments.
Jing Yin +4 more
doaj +1 more source
Squeezed Carrier Interferogram for Wavelet Phase Recovery
International Journal of Optics and Applications, 2012 The purpose of the present work is the use of the Phase evaluation CWT algorith m to extract the phase from squeezing interferogram. The squeezing interfero metry technique generates a spatial carrier interferogram named squeezed interferogram by numerical co mbination of M shifted fringes patterns.
Vamara Dembele +3 more
openaire +2 more sources
Simulasi Sinkronisasi Carrier pada Modulasi Digital menggunakan Matlab
Jurnal Elkomika, 2014 ABSTRAKDalam sistem komunikasi digital, salah satu manfaat teknik pengkodean adalah sebagai efisiensi bandwidth. Pada kanal komunikasi, adanya noise akan mengganggu dan menurunkan kinerja sistem komunikasi digital.
DWI ARYANTA +2 more
doaj +1 more source