| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a transmitter adopting the spread spectrum communication system with frequency hopping that attains high speed data transmission. <P>SOLUTION: A subcarrier selection section 16 selects a subcarrier used for transmission real information data at random by each transmission frame among a plurality of subcarriers generated by OFDM (Orthogonal Frequency Division Multiplexing) modulation, a header information generating section 18 generates a selected subcarrier number as header information, a symbol mapping section 12 applies primary modulation to the real information data by each selected subcarrier and configures the transmission frame by transmission data including the generated header information and the real information data subjected to primary modulation, and an inverse Fourier transform section 14 applies OFDM modulation to the transmission data in the transmission frame. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
