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arXiv 1601.06102cs.ITmath.IT
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具有一般信息需求的干扰网络的最佳干扰对齐

Perfect Interference Alignment for an Interference Network with General Message Demands

Zainalabedin Samadi, Vahid Tabatabavakili, Farzan Haddadi

摘要:

在实际系统中,干扰对齐(IA)的主要挑战是对系统的精确性要求。本文研究了全连通一般干扰网络的信道结构的充要条件,使理想的免疫分析在有限的信道扩展数内是可行的。到目前为止,IA的可行性文献主要集中在网络拓扑结构,相比之下,这项工作利用信道结构,以实现所考虑的网络的总自由度(DoF)的自由度的信道辅助IA计划的情况下,干扰信道的一般消息的需求。我们考虑一个单跳干扰网络与$K$发射机和$N$接收机,每个都配备了一个单一的天线。每个发送器发出一个独立的消息,每个接收器请求消息的任意子集。所获得的信道辅助条件可以被认为是信道结构上的最优自由度可行性条件。作为一个副产品,假设最佳的自由度分配,它被证明在一般的干扰网络,没有用户具有唯一的最大数量的自由度。

英文摘要:

Dimensionality requirement poses a major challenge for Interference alignment (IA) in practical systems. This work evaluates the necessary and sufficient conditions on channel structure of a fully connected general interference network to make perfect IA feasible within limited number of channel extensions. So far, IA feasibility literature have mainly focused on network topology, in contrast, this work makes use of the channel structure to achieve total number of degrees of freedom (DoF) of the considered network by extending the channel aided IA scheme to the case of interference channel with general message demands. We consider a single-hop interference network with $K$ transmitters and $N$ receivers each equipped with a single antenna. Each transmitter emits an independent message and each receiver requests an arbitrary subset of the messages. Obtained channel aiding conditions can be considered as the optimal DoF feasibility conditions on channel structure. As a byproduct, assuming optimal DoF assignment, it is proved that in a general interference network, there is no user with a unique maximum number of DoF.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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