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About 10,000 papers for “code design”

Code Design

Murali Chemuturi · Software Design · 2018

Cited by 0

Convolutional-Code-Specific CRC Code Design

Chung-Yu Lou, Babak Daneshrad, Richard D. Wesel · IEEE Transactions on Communications · 2015

Cyclic redundancy check (CRC) codes check if a codeword is correctly received. This paper presents an algorithm to design CRC codes that are optimized for the code-specific error behavior of a specified feedforward convolutional code. The algorithm utilizes two distinct approaches to computing undetected error probability of a CRC code used with a specific convolutional code. The first approach enumerates the error patterns of the convolutional code and tests if each of them is detectable. The second approach reduces complexity significantly by exploiting the equivalence of the undetected error probability to the frame error rate of an equivalent catastrophic convolutional code. The error events of the equivalent convolutional code are exactly the undetectable errors for the original concatenation of CRC and convolutional codes. This simplifies the computation because error patterns do not need to be individually checked for detectability. As an example, we optimize CRC codes for a commonly used 64-state convolutional code for information length k=1024, demonstrating significant reduction in undetected error probability compared to the existing CRC codes with the same degrees. For a fixed target undetected error probability, the optimized CRC codes typically require 2 fewer bits.

Cited by 45

Lens Design Code Standardization

DeVon W. Griffin · International Optical Design Conference · 1994

Recent work [1,2] has been undertaken to develop standards for MTF calculations. The goal of these efforts was to enable easy comparison of lens systems, without regard to the program performing the analysis. While this is an admirable goal, data from three well-known PC-based lens design codes has indicated that more fundamental issues need to be resolved before proceeding to MTF comparisons. This paper will deal with the effects of variations in pupil location on MTF results by modeling an off-axis system and a wide-angle design. This study is more timely in light of a recent discussion [3] of the impending marriage of ray tracing and photonics design codes. If calculations are based on inconsistent methodologies, inclusion of photonic design parameters will merely heighten confusion.

Cited by 0

Adjoint Code Design Patterns

Uwe Naumann · ACM Transactions on Mathematical Software · 2019

Adjoint methods have become fundamental ingredients of the scientific computing toolbox over the past decades. Large-scale parameter sensitivity analysis, uncertainty quantification, and nonlinear optimization would otherwise turn out computationally infeasible. The symbolic derivation of adjoint mathematical models for relevant problems in science and engineering and their implementation in consistency with the implementation of the underlying primal model frequently proves highly challenging. Hence, an increased interest in algorithmic adjoints can be observed. The algorithmic derivation of adjoint numerical simulation programs shifts some of the problems faced from functional and numerical analysis to computer science. It becomes a highly complex software engineering task requiring expertise in software analysis, transformation, and optimization. Despite rather mature software tool support for algorithmic differentiation, substantial user intervention is typically required when targeting nontrivial numerical programs. A large number of patterns shared by numerous application codes results in repeated duplication of development effort. The adjoint code design patterns introduced in this article aim to reduce this problem through improved formalization from the software engineering perspective. Fully functional reference implementations are provided through github.

Cited by 2

Design Concepts with Code

Kelly Carey, Stanko Blatnik · Apress eBooks · 2003

This book is all about getting developers to realize good, solid interface design for their products by considering a reasonable set of design axioms. Design Concepts with Code: An Approach for Develo

Cited by 1

Loading -code: Design Considerations

Kuzmanov Gaydadjiev Vassiliadis, G. Kuzmanov, G. N. Gaydadjiev et al. · 2003

This article investigates microcode generation, finalization and loading in MOLEN # processors. In addition, general solutions for these issues are presented and implementation for Xilinx Virtex-II Pro platform FPGA is introduced.

Cited by 0

Rotating-Pump Design Code

James F. Walker, Shucheng Chen, Dean D. Scheer · NASA Technical Reports Server (NASA) · 2006

Pump Design (PUMPDES) is a computer program for designing a rotating pump for liquid hydrogen, liquid oxygen, liquid nitrogen, water, methane, or ethane. Using realistic properties of these fluids provided by another program called GASPAK, this code performs a station-by-station, mean-line analysis along the pump flow path, obtaining thermodynamic properties of the pumped fluid at each station and evaluating hydraulic losses along the flow path. The variables at each station are obtained under constraints that are consistent with the underlying physical principles. The code evaluates the performance of each stage and the overall pump. In addition, by judiciously choosing the givens and the unknowns, the code can perform a geometric inverse design function: that is, it can compute a pump geometry that yields a closest approximation of given design point. The code contains two major parts: one for an axial-rotor/inducer and one for a multistage centrifugal pump. The inducer and the centrifugal pump are functionally integrated. The code can be used in designing and/or evaluating the inducer/centrifugal-pump combination or the centrifugal pump alone. The code is written in standard Fortran 77.

Cited by 1

Design search code updates

Trademarks · 2018

Cited by 0

Software for code design

B. L. Cashman · HEDH Multimedia · 2017

Cited by 0

Transonic Airfoil Design Code

Frances Bauer, P. R. Garabedian, David G. Korn · Lecture notes in economics and mathematical systems · 1977

Cited by 0

DESIGN METHOD Tracking Code

S. J. Brooks · 2015

In a Neutrino Factory, short proton pulses hit a target, producing pions at widely varying angles and energies. Efficient pion capture is required to maximise the yield of decayed muons, which proceed via acceleration stages into a muon storage ring to produce neutrinos. This paper presents optimisation of a solenoidal decay channel designed for high-emittance pions, based on schemes from CERN and RAL. A non-linear tracking code has been written to run under an optimisation algorithm where every beamline element can be varied, which is then deployed as a distributed computing project. Some subsequent stages of muon beamline are also simulated, including a phase rotation chicane and initial muon acceleration to 400 MeV. The objective is to find the optimal transmission in the space of possible designs.

Cited by 0

Wyner–Ziv Code Design

2017

This chapter considers the practical design of Wyner-Ziv (WZ) codes and presents the block diagram of a generic WZ codec, where X is first source coded, that is, quantized, as in a conventional lossy source coding system. However, there is usually correlation remaining between the quantized version of X and the side information Y, so Slepian-Wolf (SW) coding should be employed to exploit this correlation to reduce the rate of X. Since SW coding is essentially equivalent to channel coding, WZ coding is actually a source-channel coding problem. Therefore, both quantization loss due to source coding and binning loss due to channel coding coexist in WZ coding. The chapter introduces two important vector quantization methods, that is, lattice quantization (LQ) and trellis coded quantization (TCQ), and outlines two WZ code designs based on LQ/TCQ and low-density parity-check (LDPC) codes. It shows how to obtain the statistics of TCQ indices through the Monte-Carlo method.

Cited by 0

Code for KW-Design

KW-Design · Zenodo (CERN European Organization for Nuclear Research) · 2023

Cited by 0Open access

Code for KW-Design

KW-Design · Zenodo (CERN European Organization for Nuclear Research) · 2023

Cited by 0Open access

Code-Design-DAQ-ATMEGA2560

Diego Alonso Córdova Romero, Gustavo Omar Guarniz Avalos · Zenodo (CERN European Organization for Nuclear Research) · 2026

This repository provides the open-source hardware files, 3D mechanical mounts, and embedded Arduino software for an ultra-low-cost Data Acquisition System (DAQ). It is designed to evaluate the energy performance of scaled Wave Energy Converters (WECs) by synchronously processing hybrid sensor data (INA226, ACS712-5A, Hall sensors, MPU6050) with native digital filtering.

Cited by 0Open access

Study Design Configuration Code

National Cancer Institute · Definitions · 2020

Ope n Pe e r Re v ie w on Qe ios

Cited by 0Open access

Code for KW-Design

KW-Design · Zenodo (CERN European Organization for Nuclear Research) · 2023

Cited by 0Open access

Code for KW-Design

KW-Design · Zenodo (CERN European Organization for Nuclear Research) · 2023

Cited by 0Open access

The HBF design code.

Abdallah Aldosary (21370131), Ziad M. Ali (12516532), Shady H.E. Abdel Aleem (12757565) et al. · Figshare · 2025

<div> Power networks are being transformed by the incorporation of renewable energy sources (RES), such as photovoltaic systems and wind turbines, which also promote sustainability and lower carbon emissions. However, the widespread use of inverter-based RES threatens power quality and grid stability, with harmonic distortion being a key issue. System performance is compromised by harmonic distortion, elevating the risk of resonance and overheating equipment and increasing power losses. In this study, the Stochastic Fractal Search (SFS) algorithm is used to develop Harmonic Blocking Filters (HBF), an optimized passive power filter for reducing harmonic distortion and minimizing the system active power losses (PLOSS) in electric distribution systems. Two multi-objective optimization algorithms: Multi-Objective Artificial Hummingbird (MOAHA) and Multi-Objective Atomic Orbital Search (MOAOS) efficiently determine the ideal HBF design to maximize the system’s Harmonic-Constrained Hosting Capacity (HCHC) and minimize PLOSS to support RES while minimizing voltage and current total demand distortion (THDV and TDDI). Three test systems (TS) are used to validate the HBF’s superiority in mitigating the harmonics, minimizing PLOSS, and maximizing HCHC. In TS1, the SFS-optimized HBF decreases THDV by 78% and TDDI by 90% while maintaining PLOSS almost the same as compared to the previously obtained results in the literature. In TS2, the SFS-optimized HBF decreases THDV by 16.2%, TDDI by 99.96%, and PLOSS by 27.6% compared to the uncompensated case with no filter connected. In TS3, the SFS-optimized HBF decreases THDV by 45.71%, TDDI by 99.96%, and PLOSS by 33.26% compared to the uncompensated case. For the HCHC enhancement application, MOAOS has proven superior to MOAHA and the MOAOS-optimized HBF increases the system’s HCHC by 4.18% and in TS3, this value is increased by 16.4% compared to the literature. </div>

Cited by 0Open access

NextG Polar Code Design

Walter Roensch, Hyuck M. Kwon · 2026

Cited by 0