Transmit diversity method and system

The invention relates to a comprises a transmission unit and at least receiving and sending diversity method for wireless communication system, a determining weighted the information transmission signal sending from the emission unit according to the feedback information to at least receiver. The feedback information obtaining to the response of transmission signal from at least receiver, and fed back of the multiplex signal feedback. In addition, the transmission unit, a through the feedback information end of the filter and exchange into the filter feedback information content the other quantization a map the determining weighted information. Therefore, the multi-quantification a map and combined and/or can be used in the channel detection with a specific a map related feedback sub;, can enhance downward feeding back the resolution, simultaneously of the low-frequency signal capacitor of feedback channel.