Supercharge Your Innovation With Domain-Expert AI Agents!

Decoding method and decoding device for MIMO system

A decoding and modulo-square technology is applied in the field of decoding methods and devices of MIMO systems, and can solve the problem of high complexity of decoding methods

Inactive Publication Date: 2012-12-05
ZTE CORP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a decoding method and device for a MIMO system, so as to optimize the problem that the complexity of the existing decoding method is too high

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 and decoding device for MIMO system
  • Decoding method and decoding device for MIMO system
  • Decoding method and decoding device for MIMO system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] In Embodiment 1, this step specifically includes:

[0093] Step S10: Calculating the channel response h of the above another transmitting terminal 2 Modulus‖h 2 ‖ 2 and save;

[0094] Step S11: Calculate the channel response h of the other transmitting terminal above 2 The conjugate transpose of h 2 H and save;

[0095] Step S12: Calculate the above h 2 H The product A with the modulation symbol r received by the above system is saved, that is

[0096] A=h 2 H r

[0097] Step S13: Calculate the above h 2 H and the channel response h of the current transmitting terminal above 1 The product B of and saved; ie

[0098] B=h 2 H h 1

[0099] Step S14: According to the channel response h of the above another transmitting terminal 2 Modulus‖h 2 ‖ 2 , the above h 2 H , and the above A and B, the modulation symbol s transmitted by the above current transmitting terminal is calculated by the following formula 1 Modulation symbol s transmitted at another t...

Embodiment 2

[0104] In Embodiment 2, this step specifically includes:

[0105] Step S10': Calculate the channel response h of the above-mentioned another transmitting terminal 2 The conjugate transpose of h 2 H and save;

[0106] Step S11': Calculate the above h 2 H and save the product A of the modulation symbol r received by the above system;

[0107] Step S12': Calculate the above h 2 H and the channel response h of the current transmitting terminal above 1 The product B of and save;

[0108] Step S13': According to the above h 2 H With A and B, the modulation symbol s transmitted by the current transmitting terminal is calculated by the following formula 1 Modulation symbol s transmitted at another transmitting terminal 2 projection on

[0109] s ~ 2 = h 2 H ( r - s 1 ...

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 relates to a decoding method and a decoding device for an MIMO (Multiple Input Multiple Output) system. The method comprises the steps as follows: according to a modulation symbol r received by the system, calculating the projection which is projected by a modulation symbol s1 emitted by a current emission terminal onto a modulation symbol s2 emitted by the other emission terminal; quantitatively estimating a real part and an imaginary part to obtain the estimated values for the real part and the imaginary part s2, I, s2 and Q; carrying out constellation mapping to s2, I, s2 and Q to obtain the position of s2 in a constellation diagram; according to the position of s2, calculating an error D between the estimated value and the actual value of s1; according to D, updating the minimum error min_dist_0[k] and min_dist_1[k] between the estimated value and the actual value of s1; and according to min_dist_0[k] and min_dist_1[k], calculating the logarithmic likelihood ratio per bit of s1 to obtain a decoding result. The device comprises a projection module, an estimation module, a mapping module, an error calculation module, a minimum error updating module and a logarithmic likelihood ratio calculation module. The decoding method and the device for the MIMO system have the advantage of low decoding complexity.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a decoding method and device for a MIMO (Multiple-Input Multiple-Out-put, Multiple-Input Multiple-Output) system. Background technique [0002] Multi-antenna transmission technology plays a vital role in improving the capacity and reliability of wireless communication systems, and the distributed access method is also a hot spot in the research of high-speed packet transmission. The transmission signal is sent and received by multiple antennas at the same time, and the wireless channel between the sending end and the receiving end is changed from the traditional SISO (Single-InputSingle-Out-put) system to the MIMO system, and the communication system has Space resources other than traditional time, frequency, and code channel resources are eliminated. Theoretical research shows that a MIMO channel is a superposition of multiple SISO channels, and its capacity and ...

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): H04L1/06H04L1/00
CPCH04L25/03891H04L1/06H04L1/00
Inventor 李希
Owner ZTE CORP
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