Performance evaluation of wireless network in conformance with IEEE 802.11n in co-channel interference scenarios

Currently and due to its wide use, the wireless networks in conformance with IEEE 802.11 standard are generating channels saturation, that provokes interference between themselves. IEEE 802.11n is one of the standards that offers greater benefits to improve the wireless network performance. In this paper we analyze the performance of wireless network in conformance with IEEE 802.11n standard to evaluate its behavior in co-channel interference (CCI) scenarios. This evaluation will be taken in indoor environments under two test scenarios, with and without CCI, in terms of Quality of Service metrics: Throughput, delay, jitter and packet loss. In first scenario, without CCI, we worked with orthogonal channels 1, 6 and 11, configured in three access points (AP), each one representing a different network in which the intrusive traffic injection technique is used to obtain the required metrics. The same procedure is repeated in second scenario, where CCI is recreated, we used channel 1 configured in three AP, each one representing a different network, this procedure is repeated for channels 6 and 11. The results show, by considering the normalized throughput as an efficiency measurement, that the wireless network in conformance with IEEE 802.11n standard reduces its performance by approximately 35% in CCI scenarios.