Effect of adjacent-channel interference in IEEE 802.11 WLANs

摘要

Frequency channels are a scarce resource in the ISM bands used by IEEE 802.11 WLANs. Current radio resource management is often limited to a small number of nonoverlappingudchannels, which leaves only three possible channels in the 2.4GHz band used in IEEE 802.11b/g networks. In this paper we study and quantify the effect of adjacent channeludinterference, which is caused by transmissions in partially overlapping channels. We propose a model that is able touddetermine under what circumstances the use of adjacent channels is justified. The model can also be used to assist different radio resource management mechanisms (e.g.udtransmitted power assignments)