Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Reduce the peak-to-average power ratio of the ofdm signal

A signal and limiting technology, applied in the field of signal processing, can solve the problems of limited reduction and degradation

Active Publication Date: 2020-09-04
TEXAS INSTR INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this approach is that it often results in major degradation to other desired system parameters such as OFDM signal quality (e.g., quantifiable by the error vector magnitude (EVM) and spectral mask of the OFDM signal)
In most communication standards and systems there are stringent requirements regarding the EVM and spectral mask characteristics of the signal, thus limiting the amount of PAPR reduction achievable by soft clipping alone

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reduce the peak-to-average power ratio of the ofdm signal
  • Reduce the peak-to-average power ratio of the ofdm signal
  • Reduce the peak-to-average power ratio of the ofdm signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present disclosure relates to a system and method for reducing the peak-to-average power ratio (PAPR) of an Orthogonal Frequency Division Multiplexing (OFDM) signal. The PAPR systems and methods disclosed herein reduce the PAPR of OFDM signals and maintain the corresponding error vector magnitude (EVM) parameters and spectral mask parameters of OFDM signals within desired ranges. Communications standards often define stringent requirements for EVM and spectral masking and how to measure these values. EVM is a measure of transmitted signal quality and can be measured by a reference receiver. The spectral mask is the power of a signal outside its defined bandwidth. The systems and methods disclosed herein include initial processing in the time domain, followed by conversion to the frequency domain (eg, DFT) with further signal processing in the frequency domain to control EVM and spectral masking, reducing PAPR.

[0016] Frequency domain operations can increase the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This application involves the peak power ratio of the peak power ratio of the orthogonal frequency multiplex (OFDM) signal.Methods (300) include the following steps: During the first processing iteration (320, 330, 340, 350), the error vector amplitude (EVM) parameter and spectrum shielding parameters were used to use the OFDM signal's error.The input sample sequence (310) of the multi -way replica (OFDM) signal to reduce the peak power ratio (PAPR) of the OFDM signal.This method includes the following steps: the follow -up time domain sequence generated in the first processing iteration (320, 330, 340, 350), at least one other iteration in the first processing iteration (320, 330, 340, 350), andThe PAPR of the OFDM signal is reduced under the system target PAPR threshold and reduced under the threshold limit of the EVM parameter and spectrum shielding parameters.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application 62 / 098,136, entitled PEAK TO AVERAGE POWER RATIO (PAPR) REDUCTION OF OFDM SIGNALS, filed December 30, 2014, The entire content of this application is incorporated herein by reference. technical field [0003] The present disclosure relates to signal processing, and more particularly to a system and method for reducing the peak-to-average power ratio of an Orthogonal Frequency Division Multiplexed (OFDM) signal. Background technique [0004] The peak-to-average power ratio (PAPR) of a signal refers to the ratio of peak instantaneous power to average power, as measured over a period of time (or time window). Alternatively, the peak-to-average ratio also refers to the ratio of the peak amplitude of a signal envelope measured over a period of time to the average amplitude of the signal envelope. Typically, the peak-to-average power ratio character...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2614H04L27/2623H04B17/13H04L27/26265H04L27/3411
Inventor L·布雷彻S·埃雷兹
Owner TEXAS INSTR INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com