超密集WiFi网络下的干扰消除算法

Interference mitigation in ultra dense WiFi networks

如今无线数据的爆炸式发展给现有的无线网络带来了严重的挑战。针对超密集网络下,来自相邻AP(无线访问接入点)的干扰会严重影响本地网络的通信性能的问题,本篇文章采用了一种动态F-CSMA/CA(分布式载波侦听多路访问/冲突避免)算法,通过MATLAB的仿真,发现该算法能有效地提高系统和边缘小区用户的吞吐量,且在超密集网络中的效果要比常规的F-CSMA/CA算法在系统吞吐量上有20%的增益提高,在边缘小区的吞吐量上有15%的增益提高。

The explosion of wireless data traffic posts a significant challenge to the wireless networks. In the ultra dense WiFi networks, the interference introduced by the neighbors＇ access points can degrade the network throughput dramatically. In this paper, we propose a dynamic fractional carrier sense multiple access with collision avoidance（F-CSMA/CA） scheme that can improve the throughput of the overall system as well as that of the users located at the basic service set edges by the simulation of MATLAB. Numerical results show that the proposed algorithm works better than the conventional F-CSMA/CA algorithm in ultra dense scenarios by 20% gain in overall system throughput and 15% gain in edge throughput.