Impact of People Movement on Received Signal in Fixed Indoor Radio Communications

The effects of people movement in fixed indoor communications, known as temporal variation, are studied at 900 MHz and 2450 MHz with undertaking experiments in an office/laboratory environment. Intentional and unintentional (natural activities such as meeting, social gathering, etc.) temporal variations were examined with regard to various important parameters (i.e. mean received power, standard deviation, dynamic range of fluctuation, level crossing rate, average fade duration, etc.). In particular, it is found that the amount of dynamic range of fluctuation, mean received power and standard deviation change more likely depending on the level of time invariant received power (in a static environment) rather than on operating frequency. The results presented here could be meaningful for designing a robust fixed digital transceiver; in addition it can lead to model a simulation tool to analyze the temporal variations under diversified sets of conditions