物理层网络编码：研究、综述及展望
Physical-Layer Network Coding: Tutorial, Survey, and Beyond
摘要：
物理层网络编码（PNC）的概念于2006年提出，用于无线网络。从那时起，它已经发展成为网络编码的一个子领域，拥有广泛的追随者。PNC的基本思想是利用电磁波相互叠加时自然发生的网络编码操作。这个简单的想法有着深刻而根本的影响。各种研究人员的后续工作在1）无线通信; 2）无线信息论;和3）无线联网领域中产生了许多新的结果。本文件的目的有四个方面。首先，我们简要介绍PNC的基本概念。其次，我们调查和讨论最近在上述三个领域的主要成果。第三，我们研究PNC中的一个关键问题：同步。人们普遍认为PNC需要紧同步。然而，我们最近的结果表明，PNC实际上可能受益于异步。第四，我们建议PNC不仅适用于无线网络，它也可以用于光网络。我们提供了一个例子表明，无源光网络（PON）的吞吐量可能会提高100%与PNC。
英文摘要：
The concept of physical-layer network coding (PNC) was proposed in 2006 for application in wireless networks. Since then it has developed into a subfield of network coding with wide followings. The basic idea of PNC is to exploit the network coding operation that occurs naturally when electromagnetic (EM) waves are superimposed on one another. This simple idea turns out to have profound and fundamental ramifications. Subsequent works by various researchers have led to many new results in the domains of 1) wireless communication; 2) wireless information theory; and 3) wireless networking. The purpose of this paper is fourfold. First, we give a brief tutorial on the basic concept of PNC. Second, we survey and discuss recent key results in the three aforementioned areas. Third, we examine a critical issue in PNC: synchronization. It has been a common belief that PNC requires tight synchronization. Our recent results suggest, however, that PNC may actually benefit from asynchrony. Fourth, we propose that PNC is not just for wireless networks; it can also be useful in optical networks. We provide an example showing that the throughput of a passive optical network (PON) could potentially be raised by 100% with PNC.
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。
