MEASUREMENTS AND MODELING OF TEMPORAL VARIATIONS OF THE INDOOR RADIO PROPAGATION CHANNEL

This paper reports the results of extensive measurements and analysis of the indoor radio propagation channel's temporal variations. The emp irical data base consists of 192 one-min recordings of CW envelope fad ing waveforms with both antennas stationary. Measurements were carried out in an office environment at 1100 MHz with four transmitter-receiv er antenna separations of 5, 10, 20, and 30 m. Effects of controlled d egrees of motion with 0, 1, 2, 3, or 4 individuals walking around the high antenna only, around the low antenna only, and around both antenn as were investigated. The reported results include amplitude fading di stributions, correlation properties, level crossing rates, duration of fades statistics, and spectrum widths of the frequency domain data. T he results can be used in fixed wireless computer communication applic ations, and in supplementing the available spatial variation models of the indoor radio propagation channel.