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Interference alignment aided by non-regenerative relays

非再生继电器辅助的干扰对准

基本信息

批准号：
207341946
负责人：
Professorin Dr.-Ing. Anja Klein
金额：
--
依托单位：
Institut für Nachrichtentechnik
依托单位国家：
德国
项目类别：
Priority Programmes
财政年份：
2011
资助国家：
德国
起止时间：
2010-12-31 至 2013-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/207341946?language=en
关键词：
Interference alignment aided non regenerative

项目摘要

Traditionally, relays are used for range extension in radio communication networks, i.e., for improving the performance in noise limited scenarios. In contrast to this, we will focus on interference limited scenarios. In such scenarios, relays can be used for interference reduction following the ideas of interference alignment. The investigated scenario consists of several pairs of nodes which want to communicate with each other. Furthermore, there are several relays aiding the communication. Especially bidirectional communication shall be considered. In this case, significant performance improvements are possible following the ideas of two way relaying which up to now have not been considered in conjunction with interference alignment. Each node may be equipped with several antennas, but realistically the number of antennas at the relays will be too small to successfully decode all the received information. For this reason we assume linear, non regenerative relays. Going beyond determining the degrees of freedom, questions concerning the required number of relays and relay antennas, the signal processing techniques for the relays and the precoding at the nodes for achieving interference alignment will be answered within the project. Also, numerical performance evaluations helping the improvement of the algorithms for not purely interference limited scenarios, but with significant noise will be carried out. The two project partners will start their research towards the general case of multiple relays with multiple antennas from two special cases of this scenario. The starting point for Technische Universität Darmstadt will be a scenario with a single relay with multiple antennas enabling a joint signal processing at the relay whereas Universität Rostock will start with a scenario with many relays with a single antenna each.

传统上，中继用于无线电通信网络的范围扩展，即用于改善噪声受限情况下的性能。与此相反，我们将重点关注干扰有限的情况。在这种情况下，继电器可以按照干扰对准的思想用于减少干扰。所研究的场景由几对节点组成，这些节点希望彼此通信。此外，还有几个中继协助通信。尤其要考虑双向通信。在这种情况下，显著的性能改进是可能的，遵循双向继电器的想法，到目前为止还没有考虑与干扰对准。每个节点可能配备几个天线，但实际上，中继上的天线数量太少，无法成功解码所有接收到的信息。出于这个原因，我们假设线性，非再生继电器。除了确定自由度之外，有关所需中继和中继天线数量、中继信号处理技术以及实现干扰对准的节点预编码的问题将在该项目中得到解答。此外，数值性能评估有助于改进算法，而不是纯粹的干扰限制场景，但具有显著的噪声将进行。两个项目合作伙伴将从该场景的两个特殊情况开始研究具有多个天线的多个中继的一般情况。Technische Universität Darmstadt的起点将是一个具有多个天线的单一中继的场景，从而在中继中实现联合信号处理，而Universität Rostock将从一个具有多个中继的场景开始，每个中继都有一个天线。

项目成果

期刊论文数量（5）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Cooperative zero forcing in multi-pair multi-relay networks

DOI：
10.1109/pimrc.2012.6362631
发表时间：
2012-11
期刊：
2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)
影响因子：
0
作者：
R. S. Ganesan;Hussein Al-Shatri;T. Weber;A. Klein
通讯作者：
R. S. Ganesan;Hussein Al-Shatri;T. Weber;A. Klein

Closed-Form Solutions for Minimizing Sum MSE in Multiuser Relay Networks