Detecting algorithm based on planisphere reduction in high order modulation MIMO system

A high-order modulation and detection algorithm technology, applied in baseband system components, diversity/multi-antenna systems, and error prevention/detection through diversity reception, which can solve the problem of high complexity of detection algorithms

Inactive Publication Date: 2014-08-13
XI AN JIAOTONG UNIV
View PDF1 Cites 7 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 detection algorithm based on constellation diagram reduction in a h

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
  • Detecting algorithm based on planisphere reduction in high order modulation MIMO system
  • Detecting algorithm based on planisphere reduction in high order modulation MIMO system
  • Detecting algorithm based on planisphere reduction in high order modulation MIMO system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0047] The idea of ​​the present invention is to firstly use the extension center to reduce the constellation diagram, then perform tree expansion according to the reduced constellation diagram, and can adaptively select the constellation diagram reduction scheme according to the channel state. By reducing the constellation diagram, the number of child nodes that need to be expanded by the parent node is reduced, thereby reducing the complexity of the detection algorithm. Moreover, a constellation reduction method in the real-valued model is proposed, which makes full use of the advantages of the detection algorithm in the real-valued model. The algorithm in the invention has the advantages of both BER and complexity, and a good compromise between the BER and complexity of the algorithm can be achieved by adjusting parameters, and is a detection algorithm sui...

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 provides a detecting algorithm based on planisphere reduction in a high order modulation MIMO system. The problem that a detecting algorithm in the high order modulation MIMO system is high in complexity is solved. According to the detecting algorithm, a planisphere is reduced, tree expansion is performed according to the reduced planisphere, and the planisphere reduction scheme can be selected in a self-adaptive mode according to the state of a channel. The advantages of the detecting algorithm in an actual value model are fully used. The simulation results show that the self-adaptive detecting algorithm based on planisphere reduction is low in BER, greatly reduces the complexity of the detecting algorithm and has the advantages in the aspects of the BER and complexity. Compromise between the BER and the complexity of the algorithm can be achieved by adjusting parameters, and the detecting algorithm is suitable for the high order modulation MIMO system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a signal detection algorithm in a MIMO system, in particular to a detection algorithm based on constellation diagram reduction in a high-order modulation MIMO system. Background technique [0002] The next-generation wireless network puts forward higher and higher requirements on the service rate of wireless transmission, and improving the spectrum utilization of MIMO systems has become an urgent and important task. To improve spectrum utilization, the number of data streams multiplexed and the modulation orders employed in MIMO systems have been increasing. In the wireless communication system, the accurate detection algorithm is the key to guarantee the system's superiority, so the research on the detection algorithm has attracted the attention of scholars at home and abroad. [0003] Among various MIMO detection algorithms, the ML detection algorithm can achieve ...

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): H04L1/06H04L25/02H04B7/04
Inventor 任品毅马瑞娟杜清河
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap