| 摘要 |
Device enabling different spreading factors whilst preserving a common scrambling code, in particular for transmission in a code division multiple access cellular mobile radio system, the device including, on transmission, for spreading K incoming sequences by means of K respective spreading codes of respective length Qk (k=1, ..., K) which is a sub-multiple of a maximum length QMAX, and scrambling the spread sequences obtained in this way: means (311 to 31K) for grouping the various data symbols of the kth incoming sequence (k=1, ..., K) into different blocks of QMAX/Qk symbols, means (321 to 32K) for spreading the blocks from the kth incoming sequence (k=1, ..., K) by means of the corresponding code of length Qk to obtain a spread sequence including different spread blocks of length QMAX, means (331 to 33K) for scrambling each of the K spread sequences obtained in this way using a scrambling code of length QMAX. <IMAGE> |
