| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To increase the number of levels which can be stored in one chip without decreasing a hopping speed. <P>SOLUTION: A transmission unit 10 converts the level assigned to each of chips forming a communication frame conforming to FH-MMFSK into waveform data having an in-chip position, a time width and frequency which correspond to this level, and transmits the data. On the contrary, a receiver unit 20 receives the communication frame, and specifies the level assigned to this chip on the basis of the in-chip position, the time width, and the frequency which are stored in each of the chips forming the received communication frame. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
