| 摘要 |
In this method, all transmission signals are spread with the same PN sequence (S) within one cell and different transmission signals are transmitted in frequency bands (B1, <*>S, B2, <*>S, B3, <*>S) which are displaced with respect to one another in frequency. This system called code frequency division multiple access combines advantages of a CDMA (Code Division Multiple Access) system and of a FDMA (Frequency Division Multiple Access) system. <IMAGE> |
