| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-carrier CDMA wireless transmission method and system by which information can wirelessly be transmitted for each user at various transmission rates (communication speeds). SOLUTION: The multi-carrier CDMA wireless transmission method by which information symbols are copied and arranged on a frequency axis, a spread code is multiplied by the copied information symbols on the frequency axis, and the information symbols are spread to a plurality of subcarrier components with different frequencies to transmit the multiplexed information, adopts the multi-carrier CDMA wireless transmission method, by which the number of the information symbols applied to spread to the sub carrier components for each use to which the information is to be sent so as to control the amount of the information set at the same time thereby varying the information transmission rate. |
