| 摘要 |
<p>A transmitting side separates a transmission signal into a first information signal by a combination of spread codes and a second information signal except the first information signal, selects a combination of the spread codes corresponding to the first information signal, and performs spread modulation processing to the second information signal using the spread codes of the selected combination, and a receiving side performs despread processing to a received signal by the spread codes used on the transmitting side, selects a combination of the spread codes used on the transmitting side by use of a despread signal, and obtains the first information signal by the combination of the spread codes from the combination of the spread codes.</p> |
