A novel simplified implementation structure is proposed for digital backpropagation in subcarrier-multiplexing systems (SCM-DBP) and one of its modifications, the SCM-DBP with infinite impulse response filters reduced number interfering subcarriers (IIR-RS-SCM-DBP). To best our knowledge, it first time to convert serial calculation compensation self-subcarrier nonlinearity (SSN) cross-subcarrier (CSN) a parallel fused without affecting nonlinear (NLC) effectiveness. The performance verified...

Symbol-level fiber-longitudinal power profile estimation (PPE) greatly reduces the implementation complexity compared with waveform-level PPE using oversampled data. However, symbol-rate data cannot account for inter-sample interaction, which leads to inaccuracy of absolute estimation. To realize an accurate symbol-level PPE, we provide in-depth analysis differences between and perturbation matrices propose a calibration method based on trace inverse matrix. Evaluated in probabilistic...

The precision of mechanical equipment closely associated with parts manufacturing precision. This article mainly to realize the machine on basis low accuracy through homogeneous coordinate transformation and Taguchi theory. Firstly, using establish transfer accumulation model Secondly, mathematical three dimensional tolerance based new generation Geometrical Product Specification (GPS) is built. Thirdly, this paper establishes matching method orthogonal table improve assembly without...

This study was conducted to design a novel radial compression device with the function of automatic pressure control and evaluate feasibility safety this new technique. Patients who underwent transradial access (TRA) coronary angiography percutaneous intervention (PCI) in First Hospital Jiaxing between August 2021and October 2021 were prospectively enrolled pilot interventional study. The patients grouped 1 : ratio receive (the experimental group) or conventional without group). primary...

This paper discusses the optimization problem of e-commerce logistics networks, which mainly includes four issues: 1) establishing a model for predicting volume goods on each route; 2) calculating and distributing DC5-related routes to achieve load balancing 3) optimizing network structure route while reducing number with significant changes in transportation volume; 4) evaluating importance sites routes, proposing improvement plans, including construction new considering robustness network....

Previous investigations have preliminarily revealed that the two main methods of fiber-longitudinal power profile estimation (PPE), correlation-based (CM) and minimum-mean-square-error-based (MMSE) methods, show different performance noise robustness. To thoroughly comprehend PPE behavior in presence stochastic noise, this study introduces first comprehensive analysis CM-PPE MMSE-PPE. By introducing a novel metric, profile-to-noise ratio (PNR), we derive equations verifying offers enhanced...

Optical coherence tomography angiography (OCTA) has been widely used in clinical fields because of its noninvasive, high-resolution qualities. Accurate vessel segmentation on OCTA images plays an important role disease diagnosis. Most deep learning methods are based region segmentation, which may lead to inaccurate for the extremely complex curve structure retinal vessels. We propose a U-shaped network called SS-Net that is attention mechanism solve problem continuous discontinuous vessels...

This paper presents the behavioral quantification analytical method of electromagnetic susceptibility (EMS) for electronic devices at board level. A full-wave modeling technique coupled with a circuit-based is used in this to quantitatively describe interference immunity sensitive components circuit board. The model quantitative analysis established. Hence, prior design level can be achieved.

Power/Ground plane structure is the best configuration of modern power distribution system. But in high speed circuit, resonant modes P/G planes can be excited when signal changes reference plane. Thus it brings GBN and SSN problems. This paper presents a novel Electromagnetic Bandgap Structure which suppress frequency ultra-high using special S shape slender to connect EBG unit. The measurement results show that two stop band are obtained, one from 0.8 GHz 1.6 suppression depth -30dB, other...

To describe the influence of design parameters on energy consumption, a structured information description framework oriented to energy-saving machinery equipment is proposed, which composed two sub-models: consumption model, and – correlation model. Firstly, composition running procedures analysed balance equations based kinetic theorem are built. Furthermore, model breakthrough structure (EBS) proposed; EBS some interrelated factors, factors divided into types: element (EE) control unit...

Color measurement is important for TV color display performance evaluation indicators. Photochromic basic parameters of laser projection are introduced, including temperature, contrast ratio, gamut, uniformity illuminance luminous and so on. At last, a system given out.

The distribution of the geometric positions ground navigation stations determines Geometric Dilution Precision (GDOP), which is also one important factors determining positioning accuracy system. This paper develops a GDOP simulation study traditional hyperbolic mode for Chinese loran C system, constructs geographical map system's in China, and analyzes high-precision area, common working sea areas inland corresponding to area provides an reference maritime users maximize use Loran system...

We investigated the gain provided by optimal-super-Gaussian in DP-PCS-64QAM system. Results indicate that maximum 0.24/0.18/0.15-dB $Q^{2}$ factor is achieved compared with Maxwell-Bolzmann distribution 96-GBaud 500/1000/1500-km transmission system, respectively.

Mixed-cell-height VLSI circuits have been popularly adopted to meet different design requirements. Due various for manufacturability (DFM)-related considerations, such as layout dependent effects (LDEs), drain-to-drain abutment (DDA), and pattern coloring multiple patterning, spacings in terms of placement sites between each pair adjacent cells may result performances, which are usually modeled discrete spacing costs. To tackle a cost-aware detailed problem mixed-cell-height designs,...