Performance Analysis and Optimization of Future Low Latency and Reliable Cooperative Communication

未来低时延可靠协作通信的性能分析与优化

• 批准号: 388757095
• 负责人: Professorin Dr.-Ing. Anke Schmeink
• 金额: --
• 依托单位: INDA - Chair of Information Theory and Data Analytics
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/388757095?language=en
• 关键词: Performance; Analysis; Optimization; Future; Low

As low-latency and high reliability become two major concerns in the design of future wireless networks, various technologies are proposed, studied and improved to satisfy these requirements. Among them, relaying is well known as an efficient way to mitigate wireless fading by exploiting spatial diversity. However, almost all the existing studies of the advantages of relaying are under the ideal assumption of communicating arbitrarily reliably at Shannon's channel capacity, i.e. assuming the so-called infinite blocklength regime. As low-latency requires short blocklengths which introduce decoding errors and reduce the reliability, it is essential to study the behavior of relaying in the finite blocklength regime to contribute to the design of future low-latency and reliable networks. In this proposal, we aim at contributing to the performance analysis and system design of low latency and reliable relaying systems by utilizing a novel performance model of the finite blocklength regime and optimization techniques. More importantly, we consider more realistic system models, e.g. finite blocklength, imperfect CSI and a fading channel model, which allows us to deduce from our results more reasonable and reliable guidelines for the system design in practice. First, we will provide a detailed analysis of the performance of single-relay networks under the above described realistic system models. Then, we will extend the obtained results for single-relay networks to multi-relay networks. Finally, by exploiting the obtained analytical insights into relaying with finite blocklengths, we intend to design efficient QoS-constrained and reliable relaying networks by minimizing the error probability and maximizing the QoS-constrained capacity.

随着低延迟和高可靠性成为未来无线网络设计中的两个主要关注点，各种技术被提出、研究和改进以满足这些要求。其中，中继技术是利用空间分集来缓解无线衰落的有效方法。然而，几乎所有现有的研究中继的优点是在理想的假设下任意可靠地通信在香农的信道容量，即假设所谓的无限块长制度。由于低延迟需要短的块长度，这会引入解码错误并降低可靠性，因此有必要研究有限块长度机制下的中继行为，以有助于未来低延迟和可靠网络的设计。在这个建议中，我们的目标是有助于低延迟和可靠的中继系统的性能分析和系统设计，利用一种新的性能模型的有限块长度制度和优化技术。更重要的是，我们考虑更现实的系统模型，例如有限块长度，不完美的CSI和衰落信道模型，这使我们能够从我们的结果推导出更合理和可靠的指导方针，在实践中的系统设计。首先，我们将提供一个详细的分析单中继网络的性能在上述现实的系统模型。然后，我们将单中继网络的结果推广到多中继网络。最后，通过利用所获得的分析见解中继有限块长度，我们打算设计高效的QoS约束和可靠的中继网络，通过最小化错误概率和最大化QoS约束的容量。