| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a transmission device, relay device, reception device, communication system, transmission method or relay method, avoiding a narrow covering area. <P>SOLUTION: The transmission device includes at least one first transmission antenna having a first polarization characteristic, and at least one second transmission antenna having a second polarization characteristic different from the first polarization characteristic. The relay device includes at least one first reception antenna having a polarization characteristic identical to the first polarization characteristic, at least one second reception antenna having a polarization characteristic identical to the second polarization characteristic, and a transmission antenna having a polarization characteristic identical to either one of the first polarization characteristic and the second polarization characteristic. <P>COPYRIGHT: (C)2013,JPO&INPIT |
