Optimization of propagation models for the radio performance evaluation of wireless local area network

The wireless local area network (WLAN) has become very popular in recent years because of its utilization on free frequency bands and high speed of data transmission. However, due to increasing applications of wireless communications in these free bands, WLANs are facing interference from themselves and other applications, not only because the utilization of these free bands are very crowed, but also because most of the networks in these bands are not well planned. Optimizations of network planning are thus very important. Among the planning procedures, accurate propagation predictions are the most essential step. This paper optimizes the propagation models based on measurement techniques and employs the optimized models to evaluate the network performance of WLANs in an indoor environment where the WLAN is most popularly employed.