| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently generate a multichannel wave propagation environment in evaluating reception performance and transmission performance of an antenna of a wireless terminal device. <P>SOLUTION: A computer 1 sets a virtual travel direction and travel speed of a wireless terminal device 30, calculates a maximum Doppler frequency of downstream wireless frequency signals, and varies phases of each of the downstream wireless frequency signals distributed according to the maximum Doppler frequency of the downstream wireless frequency signals and angles of scatterer antennas so that the downstream wireless frequency signals emitted from the scatterer antennas 16-1 to 16-N become multiple waves including fading on the periphery of a test antenna 31. The computer 1 calculates the maximum Doppler frequency of upstream wireless frequency signals, and varies phases of each of the upstream wireless frequency signals received according to the maximum Doppler frequency of the upstream wireless frequency signals and the angles of probe antennas so that the upstream wireless frequency signals after synthesizing become multiple waves including fading. <P>COPYRIGHT: (C)2012,JPO&INPIT |
