| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine an effective use of reception diversity, and to reduce power consumption. <P>SOLUTION: A control system 210 determines a demand level for use in a communication resource. A transmitter communicates with a message indicating the use of the reception diversity at a mobile station based on a determined demand level. In another aspect, a receiver 200 receives one channel and determines a transmission power level of the channel at a lower-limited transmission power level or an upper-limited transmission power level. The control system 210 controls the reception diversity by selecting the number of receiver chains 290 based on the determined transmission power level. In another aspect, the receiver 200 receives one channel and determines one channel condition of the channel and the duration of the channel condition. The control system 210 selects the number of the receiver chains 290 based on the determined channel condition and the duration. <P>COPYRIGHT: (C)2010,JPO&INPIT |
