公开(公告)号：US20250047531A1

公开(公告)日：2025-02-06

申请号：US18651130

申请日：2024-04-30

Applicant: Texas Instruments Incorporated

Inventor： Jaiganesh Balakrishnan ,  Aswath VS ,  Sriram Murali ,  Sreenath Narayanan Potty ,  Raju Kharataram Chaudhari ,  Kapil Kumar

IPC: H04L25/03 ,  H04L27/26

Abstract: An example apparatus described herein to implement cancellation pulse generation includes a first memory storing first subsets of data samples of a single pulse cancellation waveform. The example apparatus includes a second memory storing second subsets of data samples of the single pulse cancellation waveform, the second subsets including different data samples of the single pulse cancellation waveform than the first subsets. The example apparatus includes first circuitry coupled to the first memory and to the second memory in parallel. The example apparatus includes a plurality of buffers. The example apparatus includes second circuitry coupled to the plurality of buffers.

公开(公告)号：US20250039027A1

公开(公告)日：2025-01-30

申请号：US18638460

申请日：2024-04-17

Applicant: Texas Instruments Incorporated

Inventor： Sriram Murali ,  Aswath VS ,  Sreenath Narayanan Potty ,  Raju K. Chaudhari ,  Kapil Kumar

IPC: H04L27/26 ,  H04B1/04

Abstract: An example apparatus to reduce crests in an input signal includes: memory; and programmable circuitry configured to: store a first copy and a second copy of a normalized window waveform in the memory, the first copy of the normalized window waveform including more data points than the second copy of the normalized window waveform; use the second copy of the normalized window waveform to generate a weight corresponding to a peak in the input signal; use the weight and the first copy of the normalized window waveform to generate an output waveform; generate a peak limiting waveform responsive to the output waveform; and combine the peak limiting waveform with the input signal to reduce an amplitude of the peak.

公开(公告)号：US20240364569A1

公开(公告)日：2024-10-31

申请号：US18632062

申请日：2024-04-10

Applicant: Texas Instruments Incorporated

Inventor： Raju Kharataram Chaudhari ,  Aswath VS ,  Sriram Murali ,  Jaiganesh Balakrishnan ,  Sreenath Narayanan Potty ,  Kapil Kumar

IPC: H04L27/26 ,  H04B1/04

CPC classification number: H04L27/2618 ,  H04B1/0475

Abstract: An example apparatus includes: crest factor reduction circuitry having a signal input and a peak cancellation waveform input; and peak cancellation waveform generator circuitry including: carrier profile analyzer circuitry having a signal input coupled to the signal input of the crest factor reduction circuitry, and having a carrier profile output; waveform construction circuitry having a carrier profile input coupled to the carrier profile output of the carrier profile analyzer circuitry, having a second input, and having a peak cancellation waveform output coupled to the peak cancellation waveform input of the crest factor reduction circuitry; and profile change detector circuitry having a carrier profile input coupled to the carrier profile output of the carrier profile analyzer circuitry, and having an output coupled to the second input of the waveform construction circuitry.