Experimental Study on Performance of IEEE 802.11n andImpact of Interferers on the 2.4 GHz ISM Band

摘要

We have studied the performance of IEEE 802.1 In in exten-sive measurement campaigns carried out in both interference-controlled and typical office environments. The results show that in a typical office environment significant performance improvement compared to earlier IEEE 802.11 technologies can be expected, but theoretically achievable bitrates were not reached. We also studied the sensitivity of IEEE 802.1 In performance to interference from other technologies used in the 2.4 GHz ISM band, and found that 802.1 In in general tolerates interference well. However, the results also show that a powerful enough narrowband interferer can have a significant negative impact and legacy 802.11 technologies operating in same region will cause performance degrada-tion. The results on interference susceptibility and key role of channel bonding in the increase of throughput indicate that in new IEEE 802.1 In deployments the 5 GHz ISM band should be preferred to the 2.4 GHz ISM band.