Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Methods and apparatuses for quadrature amplitude modulation optimized for phase noise

An amplitude modulation and amplitude technology, applied in the modulation carrier system, digital transmission system, electrical components, etc., can solve problems such as high error rate and large problems

Active Publication Date: 2020-02-11
HUAWEI TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such communications must contend with noise (such as thermal and phase noise) and other constraints (such as transmitter power limitations)
Phase noise (frequency offset) is especially problematic at high frequencies (such as 60GHz and above) and can be generated by non-ideal oscillators in both the transmitter and receiver
Especially for high-frequency communication systems, the use of high-order QAM in the presence of thermal noise, phase noise, and other constraints can lead to unacceptably high error rates

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
  • Methods and apparatuses for quadrature amplitude modulation optimized for phase noise
  • Methods and apparatuses for quadrature amplitude modulation optimized for phase noise
  • Methods and apparatuses for quadrature amplitude modulation optimized for phase noise

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Example embodiments relate generally to methods and apparatus for wireless communication using digital QAM signal constellations as described herein. The method includes modulating and / or demodulating signals according to the described constellation diagrams using wireless transmitters and / or receivers or associated signal processing electronics. The apparatus includes a wireless transmitter and / or receiver, or associated signal processing electronics, for modulating and / or demodulating a signal according to the described constellation. As used herein, QAM generally refers to any amplitude modulation including in-phase and quadrature components, used to modulate two carrier signals that are in quadrature with each other. For example, phase shift keying is considered a specific form of QAM.

[0038] Example embodiments may be used to wirelessly communicate information between a transmitter and a receiver. This information may include, for example, control plane data, app...

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

Methods and apparatuses for facilitating wireless communication using digital Quadrature Amplitude Modulation are disclosed. A wireless communication device utilizes a signal constellation for quadrature modulating a signal for transmission or quadrature demodulating a received signal. The signal constellation includes multiple constellation symbols and associated bit sequences, which can be translated there between. Specific signal constellations are disclosed.

Description

technical field [0001] Example embodiments relate generally to the field of wireless communication technologies, and more particularly to methods and apparatus for performing quadrature amplitude modulation using specific quadrature amplitude modulation constellations. Background technique [0002] Quadrature amplitude modulation (quadrature amplitude modulation, QAM) has been widely used in wired and wireless digital communication systems. In digital QAM schemes, a QAM constellation is specified by its magnitude and phase in quadrature coordinates. Phase-shift keying (PSK) modulation can be considered as a special case of QAM, where the amplitude of the PSK modulation scheme is constant and the PSK constellation is uniformly distributed on a circle. [0003] The purpose of digital QAM is to transfer messages from a transmitter to a receiver. However, such communications must contend with noise (such as thermal and phase noise) as well as other constraints (such as transmi...

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
IPC IPC(8): H04L27/34
CPCH04L1/0041H04L27/3422H04L27/3405H04L27/3483
Inventor 基多·蒙托里西塞吉·贝勒迪多辛岩颜敏林伟
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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