Measurement Based Investigation of Indoor IEEE 802.11g Channel Dynamics

Understanding channel dynamics is essential and critical to a variety of research orientations on wireless networks. This paper presents observations and analysis from extensive measurements on IEEE 802.11g channels in an indoor environment with a customized testbed and measurement tools. We obtained the following major observations: 1) delivery ratio varies smoothly and large time scale delivery ratios change largely; 2) however, Signal-to-Noise Ratio (SNR) varies largely in micro time scale, but stable in large time scale; 3) conformable to what is observed by other researchers, frame delivery ratio is not strongly correlated with SNR; 4) large time scale loss rate information is not informative.