| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate decoding at a receiver side in data transmission by an OFDM with a bandwidth different from a reference bandwidth. SOLUTION: A transmission frame generating section 14 generates a transmission frame on the basis of a code series generated by an audio signal coding section 20 and a multiplexed information data coding section 21, and stores the frame to a memory 14a at a timing regulated by a clock signal generated by a clock signal generating section 10. The transmission frame generating section 14 reads the code series stored in the memory 14a at a timing regulated by a clock signal outputted from a clock selection section 12 to adjust the bit rate. The transmission frame generating section 14 generates a transmission frame configured in the unit of 24 ms logic frames to facilitate the decoding by a receiver side. An OFDM signal modulation section 15 modulates plural carriers with the code series of the transmission frame, superimposes them and outputs an IF signal.</p> |
