公开(公告)号：US20240305323A1

公开(公告)日：2024-09-12

申请号：US18437719

申请日：2024-02-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sarma Sundareswara Gunturi ,  Chandrasekhar Sriram ,  Jawaharlal Tangudu ,  Nishant Kumar

IPC: H04B1/04 ,  H03F1/32 ,  H03F3/24

CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H03F3/245 ,  H03F2200/451 ,  H04B2001/0425

Abstract: A circuit includes a first digital pre-distortion (DPD) corrector and a second DPD corrector. The first DPD corrector has an input, and an output. The second DPD corrector has an input coupled to the input of the first DPD corrector, and an output. A signal combiner has a first input coupled to the output of the first DPD corrector, a second input coupled to the output of the second DPD corrector, and an output. The second DPD corrector is configured to provide a signal at the output of the second DPD corrector based on a signal at the input of the second DPD corrector and one or more signal statistics related to the signal at the input of the second DPD corrector.

公开(公告)号：US20240364374A1

公开(公告)日：2024-10-31

申请号：US18645599

申请日：2024-04-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sarma Sundareswara Gunturi ,  Nishant Kumar ,  Chandrasekhar Sriram ,  Jawaharlal Tangudu ,  Ram Narayan Krishna Nama Mony ,  Varun Padavu Devaraj . ,  Sashidharan Venkatraman ,  Pankaj Gaur

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H04B2001/0408

Abstract: A circuit includes a capture subsystem and digital pre-distortion (DPD) circuitry. The capture subsystem is configured to capture a set of signal samples responsive to a capture enable signal. The DPD circuitry is configured to generate a signal statistics signal based on an input signal, generate a set of DPD coefficients based on the set of signal samples, and apply DPD correction to the input signal to produce an output signal based on the signal statistics signal and the set of DPD coefficients. The set of signal samples includes samples of the signal statistics signal.