Method and system to prevent harmonics from causing distortion in a communications system
First Claim
1. A method of preventing harmonics from causing distortion in a communications system, said method comprising:
- feeding a test signal through a pre-distortion circuit in said communications system to an input of a transmitter in said communications system, wherein said pre-distortion circuit provides said test signal to said transmitter substantially without pre-distortion during an initial iteration to provide a baseline for an analyzer;
transmitting a distorted output signal produced by said transmitter to said analyzer;
analyzing said distorted output signal in said analyzer to identify one or more undesired harmonics of said distorted output signal;
generating and sending a calibration data from said analyzer to calibrate said pre-distortion circuit, thereby preventing said one or more undesired harmonics from causing distortion in said communications system.
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Accused Products
Abstract
According to one exemplary embodiment, a method of preventing harmonics from causing distortion in a communications system includes feeding a test signal through a pre-distortion circuit in the communications system to a transmitter in the communications system. The method continues by transmitting a distorted output signal produced by the transmitter to an analyzer, analyzing the distorted output signal to identify one or more undesired harmonics, and generating and sending calibration data from the analyzer to calibrate the pre-distortion circuit, thereby preventing the one or more undesired harmonics from causing distortion in the communications system. In one embodiment, a system to prevent harmonics from causing distortion in a communications system includes a pre-distortion circuit, a transmitter, and an analyzer configured to identify one or more undesired harmonics and to generate and send calibration data to prevent the undesired harmonics from causing distortion.
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Citations
20 Claims
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1. A method of preventing harmonics from causing distortion in a communications system, said method comprising:
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feeding a test signal through a pre-distortion circuit in said communications system to an input of a transmitter in said communications system, wherein said pre-distortion circuit provides said test signal to said transmitter substantially without pre-distortion during an initial iteration to provide a baseline for an analyzer; transmitting a distorted output signal produced by said transmitter to said analyzer; analyzing said distorted output signal in said analyzer to identify one or more undesired harmonics of said distorted output signal; generating and sending a calibration data from said analyzer to calibrate said pre-distortion circuit, thereby preventing said one or more undesired harmonics from causing distortion in said communications system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system to prevent harmonics from causing distortion in a communications system, said system comprising:
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a pre-distortion circuit configured to receive a test signal from a modulator in said system, wherein said pre-distortion circuit provides said test signal to said transmitter substantially without pre-distortion during an initial iteration to provide a baseline for an analyzer; a transmitter configured to receive a signal provided by said pre-distortion circuit at an input of said transmitter; said analyzer for receiving a distorted output signal produced by said transmitter, said analyzer configured to identify one or more undesired harmonics of said distorted output signal, and further configured to generate and send a calibration data to calibrate said pre-distortion circuit, thereby preventing said one or more undesired harmonics from causing distortion in said communications system. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification