Sub-Band Analysis of NLoS Indoor Channel Responses

Key factors of indoor NLoS radio channels are examined, namely the number of channel taps, the mean delay, the RMS delay spread and the channel gain. The authors analyze wideband (2-11 GHz) results in bands of 528 MHz and examine the mean behavior of the parameters vs. transmitter-receiver separation, with separations of up to 30 meters, as well as the parameters' correlation across sub-carrier frequency. The mean dependence of the parameters on terminal separation is approximated by a simple linear fit. The measurements were taken in three office buildings in the Givat Ram campus of the Hebrew University with the terminals in the same and in adjacent floors.