A method to reduce interference under adjacent frequency of frequency division duplex (FDD) multicarrierwave and time division duplex (TDD) multicarrierwave uses multiple shared public channel of carrierwave in TDD-CDMA system and uses the same pilot frequency channel for away from carrierware frequency of FDD-CDMA system including broadcast channel, paging channel and down pilot frequency channel, as well only utilizes intelligent antenna technique at each special channel to use original set carrierwave so as to make power of signal received by FDD base station from transmission of TDD base station be lowered. The adjacent frequency interference between two systems can be much reduced by the method, and the system capacity can be much increased. |