| 摘要 |
A communication system includes a first communication apparatus and a second communication apparatus. The second communication apparatus transmits different signals from first and second antennas, and first and second antennas of the first communication apparatus receive the signals, respectively. An angle formed by a first line connecting the first communication apparatus and the first antenna of the second communication apparatus and a second line connecting the first communication apparatus and the second antenna of the second communication apparatus is set to be equal to or smaller than 180 degrees. A distance between the first and second antennas of the first communication apparatus is set to a specified value, which is determined by a signal wavelength and the angle formed by the first line and the second line.
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