论文标题
秘密反向散射与定向mimo通信
Covert backscatter communication with directional MIMO
论文作者
论文摘要
我们在AWGN通道上研究了一个反向散射通信协议，在该通道中，发射器用定向多端纳来照明标签。该标签在信号上执行负载调制，同时将其物理存在隐藏在监狱长身上。我们表明，如果守望者无法访问发射机到标签的频道，则可以在$ n $ channel的使用上传输$θ（n）$可靠和掩护位。这克服了秘密交流的方形法律。本文提供了秘密反向散射通信的实际实施的第一个证据，并具有物联网安全中的潜在应用。
We study a backscatter communication protocol over a AWGN channel, where a transmitter illuminates a tag with a directional multi-antenna. The tag performs load modulation on the signal while hiding its physical presence from a warden. We show that, if the transmitter-to-tag channel is inaccessible to the warden, then $Θ(n)$ reliable and covert bits can be transmitted over $n$ channel usages. This overcomes the square-root law for covert communication. This paper provides the first evidence for practical implementation of covert backscatter communication, with potential applications in IoT security.
