| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radio communication method and a radio communication device capable of transmitting and receiving additional information buried by a high-secrecy method without deviating from a standard, and preventing a third party from easily knowing a standardized radio communication and further capable of improving throughput. <P>SOLUTION: In the standardized radio communication, optional additional data are transmitted with a flag signal for notifying Qch of the existence of a signal by using the data region of Qch that is not used when a preamble signal is transmitted without violating the standard. At a reception side, normal demodulation processing is made when the flag signal cannot be detected, and the additional data are demodulated when the flag signal is detected. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
