Pre-distortion system for cancellation of nonlinear distortion in mobile devices

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United States of America Patent

PATENT NO 9973633
SERIAL NO

14543261

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Abstract

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A pre-distortion system for improved mobile device communications via cancellation of nonlinear distortion is disclosed. The pre-distortion system may transmit an acoustic signal from a network to a device, wherein the acoustic signal includes a linear signal and a nonlinear cancellation signal that cancels at least a portion of nonlinear distortions created once a loudspeaker in the device emits the linear signal. Thus, when a loudspeaker of a mobile device is operating and nonlinear distortions are generated by the loudspeaker or adjacent components of the mobile device in close proximity to the loudspeaker, the pre-distortion system may create one or more nonlinear cancellation signals in the network. The nonlinear cancellation signal may be combined with the linear signal sent to the loudspeaker to cancel the nonlinear distortion signal created by the loudspeaker emitting acoustic sounds from the linear signal. Thus, the nonlinear cancellation signal becomes a pre-distortion signal.

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Patent Owner(s)

  • AT&T INTELLECTUAL PROPERTY I, L.P.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bowen, Donald J Madison, US 34 937
Dimitriadis, Dimitrios Rutherford, US 36 573
Ji, Lusheng Randolph, US 144 4429
Schroeter, Horst J New Providence, US 69 1442

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