Embracing wireless interference: analog network coding
Embracing wireless interference: analog network coding
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DOI：
10.1145/1282380.1282425
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发表时间：
2007-10
期刊：
影响因子：
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通讯作者：
S. Katti;Shyamnath Gollakota;D. Katabi
中科院分区：
文献类型：
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作者：
S. Katti;Shyamnath Gollakota;D. Katabi
传统上，干扰被认为是有害的。无线网络努力避免同时安排多次传输，以防止干扰。本文采用了相反的方法。它鼓励战略挑选的发件人干预。路由器没有转发数据包，而是将干扰信号转发。目的地利用网络级信息来取消干扰并恢复到达它的信号。结果是模拟网络编码，因为它混合了信号而不是位。那么，如果无线路由器向前信号而不是数据包，该怎么办？从理论上讲，这种方法将规范2向继电器网络的容量增加一倍。令人惊讶的是，这也是实用的。我们使用软件收音机实施设计，并表明它的吞吐量要比传统的无线路由以及在无线网络编码方面的先前工作要高得多。
Traditionally, interference is considered harmful. Wireless networks strive to avoid scheduling multiple transmissions at the same time in order to prevent interference. This paper adopts the opposite approach; it encourages strategically picked senders to interfere. Instead of forwarding packets, routers forward the interfering signals. The destination leverages network-level information to cancel the interference and recover the signal destined to it. The result is analog network coding because it mixes signals not bits. So, what if wireless routers forward signals instead of packets? Theoretically, such an approach doubles the capacity of the canonical 2-way relay network. Surprisingly, it is also practical. We implement our design using software radios and show that it achieves significantly higher throughput than both traditional wireless routing and prior work on wireless network coding.