| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for increasing communication numbers N set between a central unit 15 of a CDMA network and remote units 201-20N, 211-21M by a number M, while effectively overcoming an interference problem among communications. SOLUTION: N sets of communications of a 1st group added to M sets of communications of a 2nd group each using an internal spread code and an external scrambling code are set simultaneously. The communications of the 1st group synthesize 1st interferences (3) generated by each communication of the 2nd group and the 1st interference is subtracted from each communication of the 2nd group (71-7M). Similarly, the communication of the 2nd group combines 1st interferences generated by each communication of the 1st group (9), and the 1st interference generated by the communications of the 2nd group is subtracted from each communication of the 1st group (41-4N). |
