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相关概念视频

Extraction: Partition and Distribution Coefficients01:14

Extraction: Partition and Distribution Coefficients

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The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
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LC Circuits01:21

LC Circuits

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An LC circuit consists of an inductor and a capacitor, either in series or parallel. Consider a charged capacitor connected with an inductor in series. Before the switch is closed, all the energy of the circuit is stored in the electric field of the capacitor. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn, creates a magnetic field in the inductor. Because of the induced emf in the inductor, the current cannot change...
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Transmission-Line Differential Equations

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Transmission lines are essential components of electrical power systems. They are characterized by the distributed nature of resistance (R), inductance (L), and capacitance (C) per unit length. To analyze these lines, differential equations are employed to model the variations in voltage and current along the line.
Line Section Model
A circuit representing a line section of length Δx helps in understanding the transmission line parameters. The voltage V(x) and current i(x) are measured...
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When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
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Deconvolution01:20

Deconvolution

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Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
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Block Diagram Reduction01:22

Block Diagram Reduction

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The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
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联合消息传递解码为LDPC代码与CCDM的CDM代码.

Yanan Luo, Qin Huang

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    此摘要是机器生成的。

    消息传递算法共同解码低密度平价检查 (LDPC) 代码和常量组成分布匹配器 (CCDM). 这种新的方法提高了性能,为光纤通道中的短CCDM提供了显著的扩展范围.

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    科学领域:

    • 信息理论和编码.
    • 光学通信是指光学通信.

    背景情况:

    • 低密度平价检查 (LDPC) 代码和常量组成分布匹配器 (CCDM) 对于可靠的数据传输至关重要.
    • 现有的LDPC代码和CCDM解码方法可能是计算密集型,可能无法实现最佳性能.
    • 需要共同的解码策略来提高通信系统错误纠正的效率和有效性.

    研究的目的:

    • 引入新的消息传递算法,用于LDPC代码和CCDM的联合解码.
    • 开发一个高效的重量解码算法,对CCDM代码词具有线性复杂性.
    • 评估在光纤通道中提出的联合解码方法的性能增长.

    主要方法:

    • 针对LDPC代码和CCDM的联合解码而定制的消息传递算法的开发.
    • 实现一个重量解码算法,利用CCDM的重量约束,实现线性复杂性.
    • 通过在模拟光纤通道环境中进行的模拟进行性能评估.

    主要成果:

    • 拟议的联合解码算法与传统的单通解码方法相比,显示出更高的性能.
    • 使用联合解码方法的短CCDM可实现传输范围增加10.6%.
    • 线性复杂度权重解码方法提供了一种有效的方式来解码CCDM代码词.

    结论:

    • 将LDPC代码和CCDM与消息传递算法一起解码显著提高了通信系统的性能.
    • 拟议的重量解码方法为CCDM代码词解码提供了有效的解决方案.
    • 这些发现强调了短CCDM与联合解码的潜力,以扩大光通信系统的覆盖范围.