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

Decoding method based on iterative layered space-time group codes

A space-time block code, iterative decoding technology, applied in the direction of preventing/detecting errors through diversity reception, can solve the problems of underutilization of reception diversity, waste of antennas, poor anti-fading performance, etc., to achieve full diversity gain, improve The effect of improved accuracy and anti-fading performance

Inactive Publication Date: 2009-09-23
XIDIAN UNIV
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method achieves a good compromise between the diversity degree and the coding rate, only part of the receiving antennas are used in decoding, and the receiving diversity is not fully utilized, which not only causes waste of antennas, but also makes it The anti-fading performance is much worse than that of space-time block codes

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
  • Decoding method based on iterative layered space-time group codes
  • Decoding method based on iterative layered space-time group codes
  • Decoding method based on iterative layered space-time group codes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] refer to image 3 , the present invention is in the MIMO system of 4 sending 4 receiving, suppose the number of iterations is 3, and its LSTBC decoding comprises the following steps:

[0024] Step 1: Group the channel matrix and receiving vector according to the number of groups of antennas, and save the original channel matrix and receiving vector.

[0025] 1.1 Divide every two antennas into one group, each group is coded by STBC respectively, and the coding matrix is:

[0026] C = C 1 C 2 = c 1 - c 2 * - ...

Embodiment 2

[0082] refer to Figure 4 , the present invention is in the MIMO system of 6 sending 6 receiving, suppose the number of iterations is 2, and its LSTBC decoding comprises the following steps:

[0083] Step 1: Group the channel matrix and receiving vector according to the number of groups of antennas, and save the original channel matrix and receiving vector.

[0084] 1.1 Divide every two antennas into one group, each group is coded by STBC respectively, and the coding matrix is:

[0085] C = C 1 C 2 C 3 = c 1 - c 2 ...

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 decoding method based on iterative layer space-time group codes, which comprises the following steps: firstly, grouping channel matrixes and receiving vectors according to the grouping number of an antenna; secondly, performing the group interference suppression to each group of receiving vectors, and performing the STBC decoding to the obtained modified receiving vectors to obtain each group of non-iterative decoding result; thirdly, feedbacking the result to a receiving terminal for performing the STBC decoding again to obtain each group of new decoding matrix used for eliminating the interference of the receiving terminal to decode a certain of group of receiving vectors; fourthly, performing the STBC decoding to the receiving vectors after being eliminated with the interference again, and feedbacking each group of obtained iterative decoding result to the receiving terminal; fifthly, repeating the step 3 and the step 4 for n-1 time(s) according to the set iterative time n, and performing the parallel-to-serial conversion to each group of decoding result iterated by n times to obtain the final decoding result. The invention has high antifading property relative to the prior LSBC decoding method, and can be used for the space-time coding in an MIMO system.

Description

technical field [0001] The invention belongs to the technical field of coding and decoding, and in particular relates to a decoding method for a layered space-time block code LSTBC, which can be used for space-time coding in a multiple-input multiple-output MIMO system. Background technique [0002] Space-time coding technology is a space-time processing technology based on multiple-input multiple-output MIMO. It uses two-dimensional time and space to construct code words to offset fading and improve power efficiency. It can realize parallel multiplex transmission in the transmission channel and improve Spectral efficiency. Bell Laboratories in the United States proposed the concept of layered space-time coding. They proposed the framework of layered space-time coding technology in 1996 and applied for a patent. On this basis, they developed the BLAST experimental system [1.G.J.Foschini , "Layered space-time architecture for wireless communication in a fading environment wh...

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): H04L1/06
Inventor 张海林杜雪李丹萍武德斌
Owner XIDIAN 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