An experimental analysis of interference in 802.11n wireless mesh networks

The IEEE 802.11n technology has been widely deployed. The high density of deployment will lead to interference which will causes serious performance problems. The experiments are based on TH-award(Testbed for High-level Analysis of Wireless Ad-hoc Routing Design), an experimental 802.11a/b/g/n wireless multi-hop testbed. The paper introduces some experimental methods to find the effects of interference on the normal transmission. From contrast experiments, the authors compare throughput with or without interference. According to different types of interference, the results of experiments demonstrate effects of each type of interference. Our measurements prove that order of priority of interference and transmission is an important factor of impacting on performance. Then the authors analyze and discuss the reason for experiment phenomenon of interference. Our studies have important significance for 802.11n practical deployment.