Realization and Application of Full-Duplex Transceivers in Millimeter-Wave Links for Small-Cell Wireless Backhaul Networks

小蜂窝无线回程网络毫米波链路中全双工收发器的实现和应用

• 批准号: 409528830
• 负责人: Professor Dr.-Ing. Slawomir Stanczak, since 8/2019
• 金额: --
• 依托单位: Lehrstuhl und Institut für Nachrichtentechnik (IENT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/409528830?language=en
• 关键词: Realization; Application; Full; Duplex; Transceivers

The research and realization of full-duplex transceivers for the application in wireless communication networks is the goal of the requested project. A main focus of the investigations is dedicated to backhaul networks (BHN) which primary are used to enable high-speed data transmission between small-cells. Data transmission is usually performed in half-duplex mode by point-to-point links within the micro-wave bands (6–100 GHz). Since a massive deployment of small-cells for 5G is discussed, a strong demand for more efficient and flexible BHNs is just around the corner.At the moment, the extension of point-to-point links to the more complicated point-to-multipoint links, to multi-hop links over additional relay stations, or to mesh architectures entails high planning effort as well as the provision of multiple frequency channels to reduce interferences between the radio waves. Unfortunately, the congestion of small-cells inevitably leads to more complicated network architectures and in turn to the mentioned increased challenges. It is obvious that the actual half-duplex BHNs will attain their technical and economical limits soon.The considered full-duplex technology in the requested project is a worthy alternative to tackle the mentioned problematic and will significantly help to achieve adaptivity and efficiency in BHNs. Since full-duplex transceivers are able to suppress their self-interference and to work on the same channel for transmission and reception, building a mesh network will be a simple task without using multiple frequency channels. In addition, it is well-known that full-duplex systems achieve a higher spectral efficiency compared to usual half-duplex systems. Moreover, a full-duplex system is more secure against eavesdropper which is a further advantage in comparison to the actual BHNs.In the present project, we first create mathematical models for both the full-duplex transceiver and the associated communication network. These models will make an analytical framework available to evaluate and optimize mesh networks with full-duplex capability. The outcome will be a concept for realizing BHNs in mm-wave bands.Different interdisciplinary methods will be used to achieve the project goals. On the one hand, analytical methods will be utilized to describe the self-interference subject to constraints in real hardware development. On the other hand, numerical and simulative methods will be applied to investigate and model larger radio networks under realistic constraints on the wave propagation. Furthermore, a general quantification of performance limitations of such networks should be elaborated mathematically with the aid of simple assumptions. At the end, real transceivers and antennas will be developed for which high-frequency (RF) measuring instruments and numerical field theory methods will be used. The entire project is accompanied by experimental investigations with prototype implementations of full-duplex transceivers.

本课题的目标是研究和实现无线通信网络中的全双工收发器。调查的主要重点是回程网络（BHN），该网络主要用于实现小小区之间的高速数据传输。数据传输通常在半双工模式下通过微波波段（6-100 GHz）内的点对点链路进行。由于5G的小小区的大规模部署被讨论，对更高效和灵活的BHN的强烈需求即将到来。目前，点对点链路扩展到更复杂的点到多点链路，到额外中继站上的多跳链路，或网状结构需要高的规划工作以及提供多个频率信道以减少无线电波之间的干扰。不幸的是，小小区的拥塞不可避免地导致更复杂的网络架构，进而导致上述增加的挑战。很明显，实际的半双工BHN将很快达到其技术和经济极限。在所请求的项目中考虑的全双工技术是解决上述问题的一个有价值的替代方案，将大大有助于实现BHN的自适应性和效率。由于全双工收发器能够抑制其自干扰并在相同的信道上工作以进行发送和接收，因此构建网状网络将是一项简单的任务，而无需使用多个频率信道。此外，众所周知，全双工系统与通常的半双工系统相比实现了更高的频谱效率。此外，全双工系统是更安全的窃听者，这是一个进一步的优势，在比较实际的BHNs.In本项目中，我们首先创建的全双工收发器和相关的通信网络的数学模型。这些模型将提供一个分析框架，以评估和优化具有全双工功能的网状网络。其成果将是一个在毫米波段实现BHN的概念。不同的跨学科方法将用于实现项目目标。一方面，分析方法将被用来描述的自干扰受到限制，在真实的硬件开发。另一方面，数值和模拟方法将被应用于研究和模拟波传播的现实约束下的大型无线电网络。此外，这种网络的性能限制的一般量化应该在简单假设的帮助下在数学上详细说明。最后，将开发真实的收发器和天线，为此将使用高频（RF）测量仪器和数值场论方法。整个项目是伴随着全双工收发器的原型实现的实验研究。