| 摘要 |
A wireless transmitter and a wireless transmitting method in a communication system are provided with features in which a contention based channel and a scheduled channel are time-division-multiplexed, influence of interference between the channels is reduced while receiving quality is improved even if a delay in the contention based channel takes place. In the device and method, a heading portion MCS of the scheduled channel following the contention based channel is set to be more tolerant of errors (for example, QPSK, R=⅓) than the other portion MCS (for example, 16 QAM, R=⅓) and transmission is carried out.
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