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相关概念视频

The Maximum Power Transfer Theorem01:20

The Maximum Power Transfer Theorem

605
Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
605
Maximum Power Transfer01:16

Maximum Power Transfer

255
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
255
Bandpass Sampling01:17

Bandpass Sampling

175
In signal processing, bandpass sampling is an effective technique for sampling signals that have most of their energy concentrated within a narrow frequency band. This type of signal is known as a bandpass signal. The key principle of bandpass sampling involves sampling the signal at a rate that is greater than twice the signal's bandwidth to prevent aliasing.
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2....
175
Design Example01:23

Design Example

325
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
325

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相关实验视频

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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

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吞吐量请求满足方法的应用,以最大限度地提高物联网应用系统WLAN中的并发吞吐量.

Bin Wu1, Nobuo Funabiki1, Sujan Chandra Roy1

  • 1Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.

Sensors (Basel, Switzerland)
|April 13, 2024
PubMed
概括

这项研究提高了使用IEEE 802.11n无线网络的智能家庭网络的吞吐量公平性. 一种新方法最大限度地提高了高优先级主机的吞吐量,同时确保对其他人提供最低限度的服务,解决干扰问题.

关键词:
拉斯伯派 (Raspberry Pi) 是一款非常有价值的小米电脑.无线网络 (WLAN) 是一个无线网络.接入点的接入点是指一个接入点.高密度物联网网络的物联网网络.目标吞吐量目标吞吐量吞吐量最大化 吞吐量最大化交通形成的交通塑造.

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科学领域:

  • 计算机科学 计算机科学
  • 电气工程 电气工程
  • 网络工程 网络工程

背景情况:

  • 物联网 (IoT) 设备越来越多地用于智能家居,依赖于IEEE 802.11n无线局域网 (WLAN).
  • 高密度物联网网络面临的挑战包括从接入点 (AP) 接收的干扰和不平等的接收信号强度 (RSS),导致吞吐量不公平和不足.
  • 现有的吞吐量请求满足方法解决了公平性问题,但并不能完全解决在干扰下最大化特定主机的吞吐量问题的问题.

研究的目的:

  • 提出一种增强的吞吐量请求满足方法,以最大限度地提高高优先级主机在并发WLAN通信中的吞吐量.
  • 确保在最大化优先主机的吞吐量时,其他主机仍然获得最低可接受的吞吐量.

主要方法:

  • 该研究通过重新计算目标吞吐量值来扩展之前的吞吐量请求满足方法.
  • 在访问点 (AP) 应用流量塑造来控制主机的实际吞吐量.
  • 实验是在各种室内拓中使用Raspberry Pi作为AP设备的测试台系统进行的.

主要成果:

  • 增强方法有效地增加了高优先级主机的实际吞吐量.
  • 同时通信吞吐量为优先主机最大化,而对其他主机保证最低吞吐量.
  • 在不同室内环境中的实验结果证实了拟议方法在解决吞吐量不足和不公平方面的有效性.

结论:

  • 拟议的吞吐量请求满足方法的扩展成功地最大化了密集的IEEE 802.11n WLAN中高优先级主机的吞吐量.
  • 该方法为提高智能家居和其他高密度物联网环境的性能提供了实用解决方案.
  • 结果表明,在并发通信场景下,吞吐量最大化和公平性得到了显著改善.