| 摘要 |
A data transmission method in which a CDMA-coded data signal is transmitted between a transmitter and a receiver in the form of a data stream of spread data bursts, with hierarchical CDMA codes used for transmission. Spread data is detected in a first step according to a mother code of at least one receiving code. The detected data is despread in a second step by despreading it using at least one generator. The detection process is aborted in a third step if the data has been despread to a sufficient extent, or, if this is not the case, the second step is repeated using the data last despread until the data has been despread to a sufficient extent.
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