| 摘要 |
<p>Signals to be subject to variable directional transmission are multiplied by weighting factors for individual antennas (101 to 103) at a multiplier (152) for outputting to synthesis circuits (155 to 157) respectively, while signals not subject to variable directional transmission are output to any one of the synthesis circuits (155 to 157) respectively. A signal input to a synthesis circuit (155) is synthesized, radio-modulated at a radio unit (104) and transmitted from an antenna (101). Similarly, a signal input to a synthesis circuit (156) is synthesized, radio-modulated at a radio unit (105) and transmitted from an antenna (102), and a signal input to a synthesis circuit (157) is synthesized, radio-modulated at a radio unit (106) and transmitted from an antenna (103). Thereby, it is possible to dispersedly transmit signals not subject to variable directional transmission from individual antennas to reduce a transmission power and the size of a device when variable directional transmission is performed on part of terminal devices only.</p> |
