Supercharge Your Innovation With Domain-Expert AI Agents!

Method and apparatus for interferer parameter estimation using multiple receiver arbitration

A technology for receivers and demodulation parameters, which can be applied to various modulation transmitter/receiver arrangements, multiple use of transmission paths, multi-frequency code systems, etc., and can solve the problems of pilot sparse interference source discontinuity difficulty

Inactive Publication Date: 2012-07-18
TELEFON AB LM ERICSSON (PUBL)
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the sparsity of the pilots makes it more difficult to detect interferer discontinuities using only the reference pilots 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
  • Method and apparatus for interferer parameter estimation using multiple receiver arbitration
  • Method and apparatus for interferer parameter estimation using multiple receiver arbitration
  • Method and apparatus for interferer parameter estimation using multiple receiver arbitration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] figure 1 An example time-frequency grid 10 of an Orthogonal Frequency Division Multiplexing (OFDM) signal, such as a signal receivable at a wireless communication receiver when operating in an LTE or other OFDM based communication network, is shown. It can be seen that the grid 10 comprises an array of "resource blocks" 12, wherein the horizontal dimension corresponds to the frequency domain and the vertical dimension corresponds to the time domain. Furthermore, it can be seen that different parts or areas of the OFDM time-frequency grid 10 suffer from different interferences.

[0029] For example, thick solid lines are used to identify various regions 14 in the OFDM time-frequency grid, where different interference types or patterns define different regions, and there are at least two signals: the signal from the intended transmitter and the signal from the interfering transmitter. at least one signal. Within each area, there may be no interference or interference re...

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

In one embodiment, a receiver implements a method of demodulating a set of symbols dispersed within a time-frequency grid of a received OFDM signal The method includes determining which one of two or more demodulators is preferred for use in a given region of the time-frequency grid by evaluating detection statistics generated by the demodulator for the set of symbols. Each demodulators operates according to different demodulation parameters that correspond to different interference assumptions The method further includes recovering the set of symbols for decoding using whichever demodulator is preferred for each symbol according to the region from which the symbol is recovered.; The method may be further extended by updating each demodulator's demodulation parameters using reference and / or data symbols from the regions where that demodulator is preferred, and recovering the desired symbols using the updated demodulation parameters. Such updating can be further iterated, for additional demodulation parameter refinement.

Description

technical field [0001] The present invention relates generally to wireless communications, and more particularly to interference source parameter estimation for mitigating interference in wireless communication receivers. Background technique [0002] Conventional cellular systems typically deploy mobile terminals with interference mitigation capabilities. Mitigating interference has the effect of improving the signal-to-interference-plus-noise ratio (SINR) measured at the output of the receiver, resulting in better performance. This capability can be used, for example, to detect transmitted data information or to calculate some measure of channel quality information (CQI) for link adaptation and user scheduling. [0003] Interference mitigation can be achieved by different methods. One way is to cancel interference from the received signal. Another way is to jointly detect the desired signal and the interfering signal, which improves the detection of the desired signal. ...

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 Applications(China)
IPC IPC(8): H04L27/00H04J11/00H04B1/10H04L27/26H04L5/00H04B7/08
CPCH04L27/0008H04L27/2649
Inventor K·J·莫尔纳
Owner TELEFON AB LM ERICSSON (PUBL)
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com