辐射图起伏中的信息嵌入
Embedding Information in Radiation Pattern Fluctuations
摘要:
发射天线的辐射模式随着接收器改变其位置、其他物体移动以及由于天线设计本身而变化和波动。在本文中,我们演示了如何利用这种观察来调整大多数干扰信号功率,并显着提高平均可实现的通信速率。更确切地说,在$K$ -用户干扰信道的上下文中,我们提出了一种盲干扰对齐方案,该方案将发射机处的多层编码和接收机处的后处理方法相结合,以对齐干扰信号功率的重要部分。我们的方案不依赖于任何信道状态信息(CSI),因此术语盲,并且仅依赖于辐射模式波动的统计。我们提出的通信方法克服了干扰对齐概念在实际实施中的一些障碍。由于表达式的复杂性,在这项工作中,我们数值评估在不同的情况下可实现的速率,证明我们提出的策略的收益,并比较我们的结果与以前的作品与完美的CSI。
英文摘要:
The radiation pattern of transmit antennas varies and fluctuates as receivers change their location, other objects move around, and due to the antenna design itself. In this paper, we demonstrate how this observation can be exploited to align most of the interference signal power and significantly increase the average achievable communication rates. More precisely, in the context of $K$-user interference channels, we propose a blind interference alignment scheme that combines multi-layer coding at the transmitters and a post-processing methodology at the receivers to align a significant portion of the interference signal power. Our scheme does not rely on any channel state information (CSI), hence the term blind, and only relies on the statistics of the radiation pattern fluctuations. Our proposed communication methodology overcomes some of the barriers in practical implementation of the interference alignment concept. Due to the complexity of the expressions, in this work, we numerically evaluate the achievable rates in different scenarios, demonstrate the gains of our proposed strategy, and compare our results to the prior works with perfect CSI.
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