相关实验视频
Updated: Jun 28, 2025

06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.0K
在延迟断电概率约束和F-复合物色下有效的能源效率
Fahad Qasmi1, Irfan Muhammad1, Hirley Alves1
1Centre for Wireless Communications, University of Oulu, 90014 Oulu, Finland.
Sensors (Basel, Switzerland)
|April 13, 2024
概括
这项研究提高了6G物联网 (IoT) 通信在F-复合物色通道上的能源效率. 它优化了随机流量的功率和速率分配,在服务质量限制下提高了性能.
科学领域:
- 无线通信无线通信
- 信息理论 信息理论
- 网络工程 网络工程
背景情况:
- 下一代蜂网络 (6G) 和超越依赖于机器类型通信 (MTC) 与众多自主物联网 (IoT) 设备.
- 由于物联网的自主性和能源密集性,有效的能源效率 (EEE) 是6G的关键关键性能指标 (KPI).
- 现有的研究缺乏对随机到达流量的EEE的调查,这是MTC的一个基本方面.
研究的目的:
- 探索和评估F-复合物色通道的有效能源效率 (EEE),考虑物联网应用的随机到达流量.
- 分析EEE在有限的块长制度和服务质量 (QoS) 约束下,对恒定和零星的流量模式进行分析.
- 为了获得最佳的功率和速率分配策略,在QoS约束下最大限度地利用EEE.
主要方法:
- 开发了一种点对点缓冲器辅助的通信系统模型,用于在有限块长制度下进行上链传输.
- 使用F-复合物色模型来描述通信通道,假设在接收器上提供完美的通道状态信息 (CSI).
- 利用马科维亚源模型来计算平均到达率,并应用有效的带宽和容量理论来确定满足QoS的速度.
- 使用粒子群优化 (PSO) 算法,编制并解决单个和联合功率分配 (PA) 和速率分配 (RA) 的优化问题.
主要成果:
- 为中断概率和有效率推导出精确的闭式表达式,为分析提供准确的近似值.
- 证明EEE表现出准形的行为,揭示了传输功率和EEE最大化速度之间的权衡.
- 量化了视线和阴影参数对EEE性能的影响.
结论:
- 该研究提供了对复杂的色环境中物联网通信的EEE的全面分析,这对6G至关重要.
- 最佳的功率和速率分配策略对于最大限度地利用EEE而同时遵守QoS要求至关重要.
- 这些发现为设计节能6G无线系统提供了有价值的见解,支持大规模物联网部署.
相关概念视频
Power Factor Correction
172
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
172
Maximum Power Flow and Line Loadability
107
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
107
Fast Decoupled and DC Powerflow
191
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
191
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...
By substituting the entire circuit with...
255
Load-frequency control
161
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
161
Energy Losses in Transformers
866
In an ideal transformer, it is assumed that there are no energy losses, and, hence, all the power at the primary winding is transferred to the secondary winding. However, in reality, the transformers always have some energy losses, and, hence, the output power obtained at the secondary winding is less than the input power at the primary winding due to energy losses.
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the...
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the...
866

