基于干扰信道的干扰对齐算法综述

An Overview of Interference Alignment Based on Interference Channel

在无线通信系统中,用户间干扰总是制约着网络的吞吐量,因此寻求有效的干扰管理方法显得尤为关键。文中首先引出多种传统的干扰管理方法,但基于这些方法的系统容量都会受到干扰的限制,而且随着用户数的增加,很难获取这些方法的一般解。然而干扰对齐算法可使系统的总容量随着用户数的增加线性递增,文中重点综述两类干扰对齐算法:一类是基于信号空间的干扰对齐算法,另一类是基于信号编码级的干扰对齐算法,最后简要分析了干扰对齐算法的可行性和应用前景。

As an inevitable phenomenon in wireless networks,interference is the primary barrier to enhance the overall throughput of the network.Managing interference to overcome this barrier has emerged as a crucial step in developing efficient wireless networks.There are some conventional interference management approaches mentioned in this paper.The sum-capacity of the network based on all these approaches is limited by interference,and these approaches cannot get some general solutions with the increase of user number.Whereas interference alignment is a powerful scheme,with which the sum-capacity of the interference networks could be increased linearly with the number of users.Two versions of interference alignment are overviewed in this paper：signal space alignment and signal scale alignment.The feasibility and challenges of interference alignment schemes are also analyzed briefly.