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相关概念视频

Random Sampling Method01:09

Random Sampling Method

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Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest. Among the various sampling methods used by...
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In the application of the Routh-Hurwitz criterion, two specific scenarios can arise that complicate stability analysis.
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first...
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相关实验视频

Updated: Jul 20, 2025

Quasi-light Storage for Optical Data Packets
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Quasi-light Storage for Optical Data Packets

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代列表 规范的 Reed-Muller 投影 基于检测的 包装的 无源的大规模随机访问

Wenjiao Xie1, Runhe Tian2, Huisheng Zhang1

  • 1School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710129, China.

Sensors (Basel, Switzerland)
|July 29, 2023
PubMed
概括
此摘要是机器生成的。

新的算法通过增强编码的压缩传感以图案的Reed-Muller (PRM) 代码来改进无源大规模随机访问 (URA). 这些方法在单用户和多用户场景中都能提高性能,支持更活跃的用户并降低能源消耗.

关键词:
复杂的里德-穆勒代码错误纠正代码是一个错误纠正代码.机器与机器之间的通信.没有来源的大规模随机访问.

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科学领域:

  • 无线通信是一种无线通信.
  • 信息理论是信息理论.
  • 编码理论编码理论

背景情况:

  • 无源大规模随机访问 (URA) 面临由于基于几何算法和消息干扰的解码性能挑战.
  • 现有的协议在多用户场景中经常遇到困难,限制了支持的设备数量并增加了能源成本.

研究的目的:

  • 提出URA系统中编码压缩传感的新算法.
  • 为了提高带有图案的里德-穆勒 (PRM) 内代码书与外部错误纠正代码连接的性能.
  • 在单用户和多用户环境中提高解码精度和系统效率.

主要方法:

  • 引入单个用户场景的列表PRM投影算法,以减轻错误传播.
  • 为多用户场景开发一个代列表PRM投影算法,共同检测PRM代码向量和通道系数.
  • 通过理论和数值模拟对算法性能进行数学分析和验证.

主要成果:

  • 拟议的列表PRM投影检测有效地处理单用户场景,通过维护多个候选人.
  • 代列表PRM投影算法在多用户设置中显示了信号恢复的融合率的显著改进.
  • 与外部错误纠正代码和代列表检测相结合,与基准相比显示出更高的性能.

结论:

  • 带有代列表投影检测的包式URA协议显著提高了每个slot支持的活跃用户数量.
  • 提出的方法可以在给定错误概率的情况下实现更低的每位能源成本.
  • 开发的算法为大规模随机访问系统提供了更有效和更强大的解决方案.