Schaltungstheoretische Methoden in der Kommunikationstheorie

通信理论中的电路理论方法

基本信息

批准号：
230297658
负责人：
Professor Dr. Josef A. Nossek
金额：
--
依托单位：
Lehrstuhl für Netzwerktheorie und Signalverarbeitung (NWS) (aufgelöst)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2012
资助国家：
德国
起止时间：
2011-12-31 至 2015-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/230297658?language=en
关键词：
Schaltungstheoretische Methoden der Kommunikationstheorie

项目摘要

In this research project, the theoretical limits of multi-antenna communications which are imposed by physical law are investigated and solutions for optimum design within those limits are developed. Multiport theory provides a platform for the physically consistent derivation of various figures of merit of multi antenna communication systems. Yet the results obtained up till now using this theory are mostly based on rather idealistic assumptions – such as absence of heat loss –, not including important aspects – like the trade-off between bandwidth and other performance measures –, and rely on physical models which ignore important parts of engineering reality – such as the need for antenna support structures and other complicated obstacles within the vicinity of the antennas such as a human body. A part of this research project is therefore focused on overcoming issues due to over-idealization, and, thus, to arrive at sound models for which theoretical predictions are in good agreement with reality and from which the system parameters for optimum performance can be obtained from the theory. In this research project, the channel, as seen in the information theory and signal processing layer of abstraction, is not apriori given, but rather forms part of the design. In our approach, antennas, their arrangement in space, impedance matching networks, and lownoise amplifiers form part of the channel. By jointly designing these elements, the resulting information theoretic and signal processing channel with respect to some figure of merit, such as channel capacity will be analyzed and optimized. We also hope to gain deep insight into the physical limits of communications, especially their influence on the performance of matching networks.

在该研究项目中，研究了物理定律所施加的多天线通信的理论限制，并开发了在这些限制内的最佳设计解决方案，为多天线的各种品质因数的物理一致推导提供了平台。然而，迄今为止使用该理论获得的结果大多基于相当理想化的假设（例如不存在热损失），不包括重要方面（例如带宽和其他性能指标之间的权衡），并且依赖于物理模型忽略工程现实的重要部分——例如因此，需要天线支撑结构和天线附近的其他复杂障碍物（例如人体），因此该研究项目的一部分重点是克服过度理想化造成的问题，从而获得声音模型。理论预测与现实非常吻合，并且可以从理论中获得最佳性能的系统参数。在本研究项目中，如信息论和信号处理抽象层中所见，信道不是先验给定的。，而是构成设计的一部分。我们的方法、天线、它们在空间中的布置、阻抗匹配网络和低噪声放大器构成了信道的一部分。通过联合设计这些元件，所得到的关于某些品质因数（例如信道容量）的信息理论和信号处理信道将成为信道的一部分。我们还希望深入了解通信的物理限制，特别是它们对匹配网络性能的影响。