| 摘要 |
The communication system includes plural receiving nodes and a sending node. The sending node includes a sending unit, a node grouping unit, and a subcarrier selection unit. The sending unit is configured to send simultaneous broadcast data to the plural receiving nodes by use of at least one of the subcarriers. The node grouping unit is configured to refer to stored transmission path condition information, and classify the plural receiving nodes into plural destination groups based on a classification criterion related to the condition of the transmission path, and creates a destination group set. The subcarrier selection unit is configured to refer to the transmission path condition information, and select, from the plural subcarriers, a subcarrier for sending the simultaneous broadcast data to the receiving node belonging to the destination group, for each of the destination groups of the destination group set. The sending unit is configured to send the simultaneous broadcast data to each of the plural destination groups of the destination group set in turn by use of the subcarrier selected by the subcarrier selection unit. |
