| 摘要 |
<p>A communication apparatus based on a multi-carrier modulation system performs simultaneous communications using a plurality of sub-carriers modulated with data respectively. The apparatus comprises a transmitting unit (1) operable to transmit data with a plurality of sub-carriers by modulating some sub-carriers among the plurality of sub-carriers with data, and operable to use the other sub-carriers of the plurality of sub-carriers as a receiving band (3) without modulation with the data. Such a communication apparatus may be included in a mobile station or a base station for simultaneous transmission and reception with a simplified structure between the mobile station and base station using in common the same frequency band.
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