PRE-DISTORTION SYSTEM FOR CANCELLATION OF NONLINEAR DISTORTION IN MOBILE DEVICES

Patent №

US 9,973,633

Granted

2018-05-15

Filed 2014

Owner

AT&T INTELLECTUAL PROPERTY I, L.P.

Lab

AI components

1

speech

Assignment

Recorded

Dataset

AIPD

2023_r1 edition

Application

14543261

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.

SpeechH04M 9/082H04R 3/04H04R 29/00G10L 2021/02082H04R 2499/11

AI classification

Speech0.85
Natural language0.00
Machine learning0.00
AI hardware0.00
Vision0.00
Evolutionary computation0.00
Knowledge representation0.00
Planning0.00

Ownership

AT&T INTELLECTUAL PROPERTY I, L.P.

assignment · 341880812

Assignors

SCHROETER, HORST J., BOWEN, DONALD J., DIMITRIADIS, DIMITRIOS, JI, LUSHENG

On an employer assignment, the assignors are typically the inventors.

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