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Base station, radio terminal and radio communication method

Image Number 3 for United States Patent #8094553.

According to an aspect of the present invention, there is provided with a radio communication method using an OFDMA scheme for uplink communication from a plurality of radio terminals to a base station, including: detecting communication states of the radio terminals; and arranging null subcarriers between subcarriers used by the radio terminals to which frequency bands neighboring on the frequency domain are assigned, depending on the communication states of the radio terminals.

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