对具有噪声反的中继通道的反方法及其安全分析
Rong Hu1, Haonan Zhang2, Huan Yang2
1School of Intelligence Technology, Geely University of China, Chengdu 610000, China.
Entropy (Basel, Switzerland)
|August 29, 2024
概括
这项研究引入了添加式白色高斯噪声 (AWGN) 中继通道的高效编码方案,具有噪声反,增强传感器和卫星通信. 基于格子的新策略提高了在色的中继通道中的性能.
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:
- 继电频道对于传感器网络和卫星通信至关重要.
- 添加式白高斯噪声 (AWGN) 继电路的现有方案通常假定无噪声的反,从而限制了它们的适用性.
- 继电器通道中的噪声反显著降低了通信性能.
研究的目的:
- 为具有噪声反的AWGN中继通道提出一个高效的编码方案.
- 将拟议的方案扩展到具有噪声反的多输入单输出 (MISO) 色继电器通道 (FRC).
- 分析开发的编码方案的安全性能.
主要方法:
- 引入了一个基于格子的策略,以减轻AWGN中继通道中反通道噪声的影响.
- 预编码用于将MISO频道转换为单输入单输出 (SISO) 频道.
- 应用一个二维格子编码策略来解决反消色通道噪声.
主要成果:
- 拟议的基于格子的方案有效地消除了AWGN中继通道中反噪声的影响.
- 扩展方案通过将其转换为SISO通道,成功地处理MISO FRC中的噪音反.
- 数字示例验证了拟议方案的性能和安全分析.
结论:
- 开发的编码方案为具有噪声反的中继通道提供了有效的解决方案,适用于传感器网络和卫星通信.
- 基于格子和预编码的策略在具有挑战性的通信环境中提供了强大的性能.
- 该研究有助于推进安全可靠的无线通信系统.
相关概念视频
01:24Effects of feedback
528
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
528
01:26Feedback control systems
296
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
296
01:23Root Loci for Positive-Feedback Systems
107
The Hartley oscillator is a positive feedback system that sustains oscillations by feeding the output back to the input in phase, thereby reinforcing the signal. Positive feedback systems can be viewed as negative feedback systems with inverted feedback signals. In these systems, the root locus encompasses all points on the s-plane where the angle of the system transfer function equals 360 degrees.
The construction rules for the root locus in positive feedback systems are similar to those in...
The construction rules for the root locus in positive feedback systems are similar to those in...
107
01:18Positive and Negative Feedback Loops
18.6K
Animal organs and organ systems constantly adjust to internal and external changes through a process called homeostasis ("steady state"). Examples of these changes include regulation of the level of glucose or calcium in the blood or internal responses to external temperatures. Homeostasis requires maintaining an internal dynamic equilibrium:
18.6K
01:20Differential Relays
117
Differential relays are used to protect generators, buses, and transformers by comparing electrical quantities at different points. When a fault occurs, the difference in current between the two points triggers the relay to operate, opening the circuit breaker. Under normal conditions, the current entering (i1) and leaving (i2) a generator are equal. When a fault occurs, however, these currents become unequal, and the difference current flows in the relay operating coil, causing the relay to...
117
01:21Pilot and Numeric Relaying
83
Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
83