Elements of Cellular Blind Interference Alignment - Aligned Frequency Reuse, Wireless Index Coding and Interference Diversity
Elements of Cellular Blind Interference Alignment - Aligned Frequency Reuse, Wireless Index Coding and Interference Diversity
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蜂窝盲干扰对齐的要素 - 对齐频率复用、无线索引编码和干扰分集
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发表时间：
2012
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通讯作者：
S. Jafar
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作者：
S. Jafar
作者：Jafar，Syed A|摘要：我们探索自由度（DoF）的部分连接的无线网络，特别是蜂窝网络，在发射机没有信道状态信息的特征。具体来说，我们介绍了三个基本要素-对齐的频率复用，无线索引编码和干扰分集-通过一系列的例子，首先集中在无限的规则阵列，然后在有限的集群与任意连接和消息集，最后在异构设置与非对称多天线配置。对准的频率重用指的是在许多情况下正交资源分配的最优性，但是根据由干扰对准原理指导的非常规重用模式。无线索引编码突出了索引编码问题与蜂窝盲干扰对齐之间的密切联系，以及无线设置固有的附加复杂性。干扰分集是指在无线网络中每个接收器经历不同的干扰器集合的观察，并且取决于其自己的干扰器集合的动作，每个接收器处的无干扰信号空间与其他接收器不同地波动，从而为盲干扰对准原理的鲁棒应用创造机会。
Author(s): Jafar, Syed A | Abstract: We explore degrees of freedom (DoF) characterizations of partially connected wireless networks, especially cellular networks, with no channel state information at the transmitters. Specifically, we introduce three fundamental elements --- aligned frequency reuse, wireless index coding and interference diversity --- through a series of examples, focusing first on infinite regular arrays, then on finite clusters with arbitrary connectivity and message sets, and finally on heterogeneous settings with asymmetric multiple antenna configurations. Aligned frequency reuse refers to the optimality of orthogonal resource allocations in many cases, but according to unconventional reuse patterns that are guided by interference alignment principles. Wireless index coding highlights both the intimate connection between the index coding problem and cellular blind interference alignment, as well as the added complexity inherent to wireless settings. Interference diversity refers to the observation that in a wireless network each receiver experiences a different set of interferers, and depending on the actions of its own set of interferers, the interference-free signal space at each receiver fluctuates differently from other receivers, creating opportunities for robust applications of blind interference alignment principles.