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

Method for detecting uplink signal in multi-cell MIMO system for interacting part of soft information

A technology of signal detection and soft information, which is applied in the field of mobile communication, can solve the problem of large amount of soft information, achieve the effect of reducing the amount of calculation, reducing the amount of information interaction, and reducing the complexity of communication

Active Publication Date: 2015-09-09
ZHEJIANG SCI-TECH UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for a multi-user system using high-order modulation, as the number of base stations and users increases, the amount of soft information to be transmitted is very large

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 for detecting uplink signal in multi-cell MIMO system for interacting part of soft information
  • Method for detecting uplink signal in multi-cell MIMO system for interacting part of soft information
  • Method for detecting uplink signal in multi-cell MIMO system for interacting part of soft information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] Such as figure 2 As shown, four base stations are selected for cooperative detection. Base stations BS1, BS2, BS3, and BS4 are mutually adjacent base stations. The four base stations perform soft information interaction. During the interaction process, each base station sends the posterior probability data to All neighboring base stations participating in cooperative detection.

[0052] image 3 It shows that in an embodiment of the present invention, in the scenario of coordinated detection of four base stations, image 3 (a) The modulation order M is 16, image 3 (b) The modulation order M is 64, and the base station n (n can be one of 1, 2, 3, 4) selects 25% of the information volume before the interaction and interacts with the base station for all soft information. The impact on the cooperative detection performance of the base station, as shown in image 3 As shown, the performance of base station independent detection is obviously not as good as cooperative d...

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

The invention discloses a method for detecting an uplink signal in a multi-cell MIMO system for interacting part of soft information. The method comprises the following steps: detecting all signals with each base station, obtaining posterior probabilities of each base station to all symbols, ranking the maximum posterior probability of all symbols from the large to small with each base station, selecting front posterior probability data, transmitting the posterior probability data of the selected constellation points to adjacent base stations who participate in a cooperative detection; calculating posterior probability data which is not selected and transmitted by other base stations after each base station receives soft information of local user symbol transmitted by other base stations; performing soft combination to the processed integrating probability data with the each base station, calculating the posterior probability of the symbol transmitted by the user in local cell, and selecting symbol whose probability is the largest as a final detecting result. The method of the invention could effectively reduce complexity of detecting an uplink baseband signal in the multi-cell MIMO system.

Description

technical field [0001] The invention belongs to the mobile communication technology, and in particular relates to a method for detecting uplink signals of a multi-cell MIMO system for exchanging partial soft information. Background technique [0002] In a multi-user multi-cell MIMO system, multiple base stations cooperate to jointly detect the uplink signals of multiple users to improve the accuracy of signal detection, but this method is complex and requires a large amount of calculation. As the number increases, the amount of computation increases exponentially. [0003] After searching the existing technology, Shaoshi Yang and TiejunLv found in "Distributed Probabilistic-Data-Association-Based SoftReception Employing BaseStation Cooperation in MIMO-AidedMultiuserMulticell Systems" IEEE Trans.Vehicular Technology.vol.60, no.7, pp.3532-3538 ,Sept.2011. (i.e. base station distributed cooperative detection based on probabilistic data association technology in multi-user mult...

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): H04B7/04
CPCH04B7/0452
Inventor 史清江樊晓琦俞佳敏彭成徐伟强
Owner ZHEJIANG SCI-TECH UNIV
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