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    • 11. 发明授权
    • CDMA demodulating apparatus and method and CDMA mobile communication system
    • CDMA解调装置和方法以及CDMA移动通信系统
    • US06788669B1
    • 2004-09-07
    • US09696180
    • 2000-10-26
    • Michiaki TakanoKazuaki Ishioka
    • Michiaki TakanoKazuaki Ishioka
    • H04B7216
    • H04B1/70718H04B1/70751H04W74/08
    • In a CDMA mobile communication system, upon occurrence of a call-connecting request, a mobile station sends a CDMA burst signal to a base station by random access. The base station detects de-spreading timing based on a correlation value between the CDMA burst signal and a reference code. Further, the base station delays the CDMA burst signal for a delay time equal to the time necessary for the detection of the timing. Upon detection of the de-spreading timing, the base station de-spreads the second-half portion of the CDMA burst signal from the midpoint to the end thereof, and at the same time, de-spreads the first-half portion of the delayed CDMA burst signal. By this, the demodulation time can be shorted as compared with that in the case of de-spreading the CDMA burst signal from its beginning to its end.
    • 在CDMA移动通信系统中,在出现呼叫连接请求时,移动台通过随机接入向基站发送CDMA突发信号。 基站基于CDMA突发信号与参考码之间的相关值来检测解扩定时。 此外,基站将CDMA突发信号延迟等于检测定时所需时间的延迟时间。 在检测到解扩定时时,基站将CDMA突发信号的后半部分从中点解除扩展到其结尾,同时,将延迟的前半部分 CDMA突发信号。 由此,与从其开始到结束的CDMA突发信号解扩的情况相比,解调时间可以短路。
    • 13. 发明授权
    • Base station, mobile station, communication system, and communication method
    • 基站,移动台,通信系统和通信方式
    • US07424305B2
    • 2008-09-09
    • US10556730
    • 2004-05-13
    • Takahiko YamazakiMichiaki TakanoRyoichi Fujie
    • Takahiko YamazakiMichiaki TakanoRyoichi Fujie
    • H04B7/00
    • H04W52/322H04W52/16
    • A base station communicates with plural mobile stations using a common channel common to the mobile stations, and a predetermined number of a plurality of shared channels assigned to the mobile stations. The base station includes a scheduler that acquires, for each of the mobile stations, a transmitting power ratio being a ratio of a mobile station assigning power, which is a sum of transmitting powers of the shared channels assigned to the mobile station, and a transmitting power of the common channel. The scheduler determines the mobile station assigning power of the mobile station and then selects communication destination mobile stations, so that a sum of the mobile station assigning powers does not exceed a predetermined maximum assignable power.
    • 基站与多个移动站进行通信,该移动台使用与移动站共用的公共信道,以及分配给移动台的预定数量的共享信道。 基站包括调度器,对于每个移动站,获取作为分配给移动站的共享信道的发送功率之和的移动台分配功率的比率的发送功率比和发送功率比 公共通道的功率。 调度器确定移动台分配移动台的功率,然后选择通信目的地移动台,使得移动台分配功率的总和不超过预定的最大可分配功率。