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1. 发明授权

US5991636A Adaptive power control method for a CDMA mobile radio telephone system 失效
标题翻译： CDMA移动无线电话系统的自适应功率控制方法
公开(公告)号：US5991636A
公开(公告)日：1999-11-23
申请号：US915945
申请日：1997-08-21
申请人： Seok-Ho Won , In-Myoung Jeong , Whan-Woo Kim , Duck-Bin Im
发明人： Seok-Ho Won , In-Myoung Jeong , Whan-Woo Kim , Duck-Bin Im
IPC分类号： H04B7/005 , H04Q7/20
CPC分类号： H04W52/221 , H04W52/225 , H04W52/362
摘要： An adaptive power control method for a CDMA mobile radio telephone system is disclosed which operates similarly to a fixed increment and decrement power control method in the portion where the slope of the channel signal due to a fading effect is steep when the transmission power of a mobile station is adjusted. In the portion where the slope of the channel signal is gentle, like the peak portion of the channel signal, the granular noise can be improved by using the Jayant's equations. In accordance with the present invention, the fading effect in the mobile radio channel can be efficiently compensated without giving much load to a forward link since a mobile station determines the variation of the backward channel signal by using the statistical characteristics of a power control command (1 bit) transmitted from a base station. Further, an amount of interferences among a plurality of users can be reduced because the variation (variance) of a receiving power at the base station caused by the fading effect in each mobile station is made small. Thus, the overall performance of the system can be significantly improved in accordance with the present invention.
摘要翻译：公开了一种用于CDMA移动无线电话系统的自适应功率控制方法，其操作类似于在移动台的发射功率下由于衰落效应而导致的信道信号的斜率陡峭的部分中的固定增量和减小功率控制方法车站调整。在通道信号的斜率平缓的部分，如通道信号的峰值部分，可以通过使用Jayant方程来提高粒状噪声。根据本发明，由于移动台通过使用功率控制指令的统计特性来确定反向信道信号的变化，可以有效地补偿移动无线电信道中的衰落效应，而不会给前向链路带来很大的负担 1位）从基站发送。此外，由于每个移动台中由衰落效应引起的基站处的接收功率的变化（方差）变小（多少），所以可以减少多个用户之间的干扰量。因此，根据本发明，可以显着改善系统的整体性能。

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