公开(公告)号：US5721757A

公开(公告)日：1998-02-24

申请号：US619044

申请日：1996-03-20

申请人： An Tuyen Banh ,  Rulon G. VanDyke

发明人： An Tuyen Banh ,  Rulon G. VanDyke

IPC分类号： H03G3/20 ,  H03G3/30 ,  H04Q7/36 ,  H04L27/08

CPC分类号： H03G3/3052

摘要： In accordance with one embodiment of the present invention, in a wireless telecommunications system, an automatic gain control loop for a base station, comprises a demodulator having at least one output terminal. The demodulator is adapted to demodulate signals received by the base station so as to provide a plurality of phase signals via its output terminals. These phase signals correspond to the phase of the signals received by the base station. A plurality of variable-gain amplifiers are adapted to receive one of the phase signals and to change the amplitude of said phase signals. A plurality of signal processing units are adapted so as to receive signals provided by the variable amplifiers, and each of the signal processing units is further adapted to generate a feedback control signal so as to control the gain of each one of the variable-gain amplifiers. In accordance with another embodiment of the invention, a method for controlling the gain of signals received by a base station in a cellular communication system comprises the steps of demodulating the signals so as to generate phase signals corresponding to the received signals, variably controlling the magnitude of each one of the phase signals based on a feedback control signal, and processing the phase signals so as to generate the feedback control signal.

摘要翻译： 根据本发明的一个实施例，在无线电信系统中，用于基站的自动增益控制回路包括具有至少一个输出端的解调器。 解调器适于对由基站接收的信号进行解调，以便经由其输出端提供多个相位信号。 这些相位信号对应于由基站接收的信号的相位。 多个可变增益放大器适于接收相位信号之一并改变所述相位信号的振幅。 多个信号处理单元适于接收由可变放大器提供的信号，并且每个信号处理单元还适于产生反馈控制信号，以便控制每个可变增益放大器的增益 。 根据本发明的另一个实施例，一种用于控制由蜂窝通信系统中的基站接收的信号的增益的方法包括以下步骤：对信号进行解调，以产生对应于接收信号的相位信号，可变地控制幅度 基于反馈控制信号的每个相位信号，并且处理相位信号以产生反馈控制信号。