Abstract:
A method and apparatus for limiting the effect of interfering transmission on a Global Positioning System (GPS) receiver is disclosed. A first mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a linear state. A second mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a non-linear state. A first signal is provided indicating a presence of a jamming signal. In response to the first signal the GPS receiver is switched from the first mode of operation to the second mode of operation.
Abstract:
A method and apparatus for limiting the effect of interfering transmission on a Global Positioning System (GPS) receiver is disclosed. A first mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a linear state. A second mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a non-linear state. A first signal is provided indicating a presence of a jamming signal. In response to the first signal the GPS receiver is switched from the first mode of operation to the second mode of operation.
Abstract:
The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.
Abstract:
The present invention discloses a proactive gain control system (200) for a communications receiver. The proactive gain control system (200) includes a variable gain module (220) for outputting an output signal in response to an input signal. A detector (204) detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor (206) monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module (208) outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module (210) outputs a gain control signal to the variable gain module (220), which determines a gain between the input and output signals, in response to the gain adjustment value.
Abstract:
The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.
Abstract:
A first low-noise amplifier is connected to a first receiving processing unit through a first cable and a bypass circuit is provided in parallel to the first low-noise amplifier so as to bypass the first low-noise amplifier. In the case that the intensity of broadcasting signal is more than a predetermined value, when the C/N is more than a first predetermined value and less than a second predetermined value higher than the first predetermined value, the broadcasting signal is transmitted to the first cable through the first low-noise amplifier, and when the C/N is less than the first predetermined value or more than the second predetermined value, the broadcasting signal is not input to the first low-noise amplifier but transmitted to the first cable through the bypass circuit.
Abstract:
신호처리를위한수신기는제1 증폭회로와제2 증폭회로를포함한다. 제1 증폭회로는제1 이득프로파일과관련되어동작한다. 제2 증폭회로는제2 이득프로파일과관련되어동작한다. 수신기는또한변조된신호와관련된품질표시자를결정하는이득제어회로를포함한다. 이득제어회로는결정된품질표시자에적어도부분적으로기초하여제1 이득프로파일및 제2 이득프로파일을조정한다.