Measurement of 3GHz-band Radio Propagation in Macro Cellular Environments

3.4-4.2 and 4.4-4.9 GHz microwave bands are regarded as promising candidates in the possible frequency bands that can be assigned to the 4G mobile communication systems. In order to contribute to the frequency allocation, we conducted radio propagation experiments by use of 3.35 GHz carrier frequency in macro-cellular environments. For the experiments, we developed a measurement system calculating received signal power and delay power profiles by employing 2¹⁵-1 PN sequences with a sampling rate of 160 Msample/s, which enables the high accuracy of radio propagation measurements. This paper describes an outline of the radio propagation experiments, and presents the results of rms delay spread distribution, in addition to the evaluation of two propagation models: Walfisch-Ikegami (WI) and extended WI models