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

Cross-layer combining method of multi-antenna system

A multi-antenna system, cross-layer technology, applied in the cross-layer joint field of multi-antenna systems, can solve problems such as inability to accurately describe system performance, and achieve the effect of locally minimizing system packet loss rate and concise modeling

Inactive Publication Date: 2012-03-28
BEIJING JIAOTONG UNIV
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the traditional layered design method mentioned in the above background technology that cannot accurately describe the system performance, the present invention proposes a cross-layer joint method for a multi-antenna system

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
  • Cross-layer combining method of multi-antenna system
  • Cross-layer combining method of multi-antenna system
  • Cross-layer combining method of multi-antenna system

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0048] 1. Judging the parameters of the adaptive modulation mode of the multi-antenna system, and then determining the selection probability of the adaptive modulation mode

[0049] The average packet error rate P of the transmission under the adaptive modulation mode n(n∈N) can be obtained from the simulation fitting 0 And as the target packet error rate of the physical layer, so as to determine the boundary value of the mode signal-to-noise ratio

[0050] (1) Output SNR probability density function of MIMO-STBC system

[0051] Using the channel model to describe the wireless channel quality, according to the space-time block code STBC equivalent single-input single-output (SISO) system formula, the signal-to-noise ratio of the space-time block code STBC decoding output is the parameter is mD and the mean is / R c Gaussian distribution, so the probability density function of the output signal-to-noise ratio of the system is:

[0052] P rS...

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 cross-layer combining method of a multi-antenna system in the technical field of cross-layer optimization of a wireless network. The cross-layer combining method comprises the following steps of: firstly, judging the parameters of the adaptive modulation mode of the multi-antenna system so as to determine the selection probability of the adaptive modulation mode; secondly, calculating a transferring probability of an adjacent mode according to the selection probability of the adaptive modulation mode to obtain a channel state transferring matrix; thirdly, acquiring queue service combined stable distribution through data packet arrival distribution, a service process and queue waiting data packet state distribution; and finally, determining an overflow packet loss rate and a system packet loss rate, and determining the optimal packet error rate and the optimal throughput of the system. By the cross-layer combining method, the local minimum system packet loss rate and the maximum system average throughput are realized; the relatively optimal cross-layer property is acquired by using a relatively simple algorithm, so the system frequency spectrum utilization rate is increased to the maximum extent; and the finite frequency spectrum resources are used fully.

Description

technical field [0001] The invention belongs to the technical field of wireless network cross-layer optimization, and in particular relates to a cross-layer joint method of a multi-antenna system. Background technique [0002] The traditional layered design method is difficult to adapt to the dynamically changing wireless environment (such as serious interference between users, signal fading, access conflicts, etc.) Difficult to guarantee users diverse and variable quality of service QoS. The essential idea of ​​cross-layer design is to break the traditional communication system framework, and to meet the system service requirements, the status parameters of communication system resources (such as coding and modulation methods, etc.) and service quality QoS parameters (such as packet error rate, etc.) Layer transfer, so as to achieve the joint design of each protocol layer, make full use of system resources, and provide users with better services. [0003] Multiple-input a...

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
Inventor 赵军辉关欣李秀萍
Owner BEIJING JIAOTONG 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