Frequency Selective Fading on Wideband Mobile Radio Channels

Wideband indoor measurements were performed in different scenarios with a 300 MHz bandwidth chirp sounder to generate 100 channel impulse responses every one second. To study the frequency selective fading for OFDM and WCDMA systems, the 300 MHz bandwidth was divided into either 15 sections with 20 MHz bandwidth or into 60 sections with 5 MHz bandwidth. Statistical analysis was then performed on the fading results. The paper provides a brief description of the sounder parameters and the environment of the measurements. Fading results are provided for the sub channels, in the three different environments. The results show that the variation of the signal level due to frequency selective fading is within 7 dB for 90% of the locations.