Wideband radio channel variation with indoor terminal separation: Measurement results

The Multiband OFDM Alliance (MBOA), established to formulate an industry-based standard for UWB communications, suggested dividing the 3-10 GHz spectrum to 14 sub-bands. Motivated by the sub-band approach, this paper presents measurement results of the mean (excess) delay and RMS delay spread. We also analyze channel gain vs. terminal separation and frequency. We characterize the dependence of the measured parameters on the transmitter-receiver separation, in office building settings with no line of sight, our investigation of the dependence of the parameters on sub-carrier frequency did not yield a significant trend of the parameter values vs. carrier frequency. This paper uses the MBOA defined sub-bands with carrier frequencies between 3.432 GHz and 10.296 GHz and 528 MHz bandwidth. Our measurement included terminal separations of 5-30 meters.