The development of an empirical delay model for IEEE 802.11 b/g based on SNR measurements

Wireless local area networks (WLAN) based on IEEE 802.11b/g standards´ are widely deployed to provide wireless interconnectivity around university campuses, business offices, and homes. A WLAN is inexpensive, easy to install, and provides data rates of up to 54 Mbps. This study experimentally analyzed the network delay performance parameter and the wireless physical channel signal-to-noise ratio (SNR) of an IEEE 802.11b/g WLAN under different signal strength values. The measurement results indicated that the IEEE 802.11 b/g delay parameter could be predicted and modeled as a function of SNR. The experiments were conducted with and without source of interference; a cordless phone operating in 2.4 GHz was used to provide interference. Given SNR values. The achieved model is useful in determining optimal placements of the wireless network access points prior to deployment. The values of SNR of a specific site are calculated using the site path loss models.