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

Joint signal detection and channel estimation method based on multi-user multi-input multi-output (MIMO) relay system

A relay system and joint signal technology, applied in channel estimation, baseband system, baseband system components, etc., to improve the efficiency of information transmission

Inactive Publication Date: 2018-03-30
COMMUNICATION UNIVERSITY OF CHINA
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant research on the application of the PARAFAC model to multi-user relay systems.

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
  • Joint signal detection and channel estimation method based on multi-user multi-input multi-output (MIMO) relay system
  • Joint signal detection and channel estimation method based on multi-user multi-input multi-output (MIMO) relay system
  • Joint signal detection and channel estimation method based on multi-user multi-input multi-output (MIMO) relay system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] See image 3 , image 3 It is a BER performance curve diagram of the present invention under different numbers of users. The system parameters are: M S = 2, M R = M D =5, N=10. image 3 It shows that for different numbers of users, the bit error rate gradually decreases with the increase of SNR. As the number of users increases, the signal detection performance of the system decreases. When other conditions remain unchanged and the number of users increases, the number of information symbols (data streams) to be detected increases, which leads to a decrease in the performance of the algorithm.

Embodiment 2

[0044] See Figure 4 , Figure 4 It is the NMSE performance curve chart of the present invention under different numbers of users. The system parameters are: M S = 2, M R = M D =5, N=10. image 3 It shows that when the number of users increases, the performance of channel estimation decreases, but the accuracy of channel estimation is still high.

Embodiment 3

[0046] See Figure 5 , Figure 5 It is a graph showing the influence of different numbers of antennas at the sink end on the signal detection performance in the present invention.

[0047] When the number of users is 3, other system parameters are: M S = 2, M R =5, K=6, N=10. Figure 5 shows that with M D Increase, the signal detection performance is improved. Therefore, we can improve signal detection performance by increasing the number of sink antennas. In addition, when the number of antennas at the sink end is far less than the total number of antennas at the source end, the method still shows good performance in signal detection. For example, when the number of antennas at the sink end is M D When it is 4, the method still performs well.

[0048] In summary, for the multi-user MIMO relay system, the present invention performs KRST encoding on the information symbol transmission matrix sent by all users, and then constructs the signal received at the sink into a P...

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 an iterative channel estimation method for a multi-input multi-output (MIMO) relay system, which mainly solves the problem of joint information detection and channel estimation for a multi-user MIMO relay system. The method is implemented according to the following steps: 1) KRST coding is carried out on information signal transmission matrixes; 2) a plurality of users simultaneously send information to a relay; 3) the relay amplifies received signals, and forwards the amplified signals to a sink; 4) the signals received by the sink are constructed into a PARAFAC model; and 5) the information signal matrixes are detected through the BALS algorithm, and a combined channel is estimated. The method provided by the invention has the advantages that joint signal detection and channel estimation can be carried out rapidly and precisely, the applicability for a time division system and a frequency division system is achieved, and the communication reliability and a data transmission rate can be improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a joint signal detection and channel estimation method of a multi-user MIMO relay system Background technique [0002] With the demand for high-speed data transmission and wide network coverage in the field of wireless communication, MIMO relay technology has received more and more attention. The relay system can be divided into non-regenerative relay (ie, amplify and forward relay (AF)) and regenerative relay (ie, decode and forward relay (DF)). For future wireless standards, the AF relay system in MIMO communication has become a promising solution due to its advantages in extending coverage and increasing space diversity. In addition to relays, deploying nodes with multiple antennas helps to further increase the achievable data transfer rate. In addition, applying multi-dimensional signal processing techniques in dimensions such as time domain, air doma...

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): H04B7/0452H04L25/02
CPCH04B7/0452H04L25/0204H04L25/0242
Inventor 杜建和毛越儿常睿
Owner COMMUNICATION UNIVERSITY OF CHINA
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