发明名称 TRANSMISSION POWER CONTROL METHOD OF WIRELESS COMMUNICATIONS SYSTEM, WIRELESS COMMUNICATIONS SYSTEM, TRANSMITTING DEVICE, AND RECEIVING DEVICE
摘要 <p><P>PROBLEM TO BE SOLVED: To provide a transmission power control method which attains desired receiving quality preventing the increase in average transmitted power when a gain variation of propagation path of a comparatively short period occurs. <P>SOLUTION: Transmission power corresponding to the gain variation of propagation path is controlled so that communication channel capacity increases. Namely, the transmitted power is determined so that the sum of noise power (= receiving noise power/propagation path gain) converted into a transmitting end and the transmitted power becomes constant as shown in Fig.4. Accordingly, in a way contrary to the conventional one, the transmitted power is controlled to be decreased when the propagation path gain decreases, and to be increased when the propagation path gain increases. <P>COPYRIGHT: (C)2008,JPO&INPIT</p>
申请公布号 JP2008017537(A) 申请公布日期 2008.01.24
申请号 JP20070257045 申请日期 2007.10.01
申请人 HITACHI LTD 发明人 YANO TAKASHI;TAMAKI SATOSHI
分类号 H04B7/26 主分类号 H04B7/26
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