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相关概念视频

Interference: Path Lengths01:10

Interference: Path Lengths

1.3K
Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
1.3K
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

5.0K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
5.0K
Sound Waves: Interference00:53

Sound Waves: Interference

3.7K
Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
3.7K
Propagation of Waves01:07

Propagation of Waves

2.3K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
2.3K
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

129
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
129
Network Function of a Circuit01:25

Network Function of a Circuit

268
Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.
268

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相关实验视频

Updated: Jun 11, 2025

Calibration of Vector Network Analyzer for Measurements in Radio Frequency Propagation Channels
10:00

Calibration of Vector Network Analyzer for Measurements in Radio Frequency Propagation Channels

Published on: June 2, 2020

20.8K

通过干扰对齐,为多个单播网络提供外部代码.

F R Kschischang1, F Manganiello2, A Ravagnani3

  • 1University of Toronto, Toronto, Canada.

Designs, codes, and cryptography
|October 2, 2024
PubMed
概括
此摘要是机器生成的。

我们介绍了一个编码网络的框架,将多个单播问题连接到有限场干扰对齐. 我们的研究结果确定了速率区域的界限,并强调了网络编码中场地特征的重要性.

关键词:
可实现的利率地区.束着束着束着外部代码 外部代码有限字段 有限字段多个单播网络.

更多相关视频

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Highly Multiplexed, Super-resolution Imaging of T Cells Using madSTORM
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Highly Multiplexed, Super-resolution Imaging of T Cells Using madSTORM

Published on: June 24, 2017

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相关实验视频

Last Updated: Jun 11, 2025

Calibration of Vector Network Analyzer for Measurements in Radio Frequency Propagation Channels
10:00

Calibration of Vector Network Analyzer for Measurements in Radio Frequency Propagation Channels

Published on: June 2, 2020

20.8K
Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

9.8K
Highly Multiplexed, Super-resolution Imaging of T Cells Using madSTORM
08:43

Highly Multiplexed, Super-resolution Imaging of T Cells Using madSTORM

Published on: June 24, 2017

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科学领域:

  • 信息理论 信息理论
  • 网络编码 网络编码
  • 有限场理论 有限场理论

背景情况:

  • 多重单播问题是网络编码的一个基本挑战.
  • 现有的方法往往缺乏对线性,固定网络代码的统一理论框架.

研究的目的:

  • 引入一个正式的框架来分析线性编码网络中的多重单播问题.
  • 为了建立网络编码和干扰对齐在有限领域之间的连接.

主要方法:

  • 为线性,固定网络代码制定正式框架.
  • 将多重单播问题作为在有限字段上的干扰对齐问题的表述.
  • 对可实现的利率区域的外部边界的推导.

主要成果:

  • 证明多重单播问题和有限场干扰对齐之间的等价性.
  • 在特定的网络示例中,为可实现的利率区域建立一个明确的外界.
  • 确定有限场的特征的关键作用.

结论:

  • 拟议的框架为编码网络设计提供了新的见解.
  • 对有限字段的干扰对齐是分析网络编码的强大工具.
  • 现场特征显著影响编码网络中可实现的速率.