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

A decoding method, device and system for ovxdm system

A decoding device and decoding technology, applied in the field of devices and systems, and decoding methods, can solve the problems of increased decoding complexity and difficulty in satisfying real-time decoding

Active Publication Date: 2021-09-10
国网甘肃省电力公司武威供电公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For an M-dimensional modulated system with overlapping multiplicity K, the number of nodes in the Trellis graph is M K , since each node needs to be expanded during the decoding process, the number of nodes determines the decoding complexity, causing the decoding complexity to increase with the overlapping multiplicity index
As we all know, in the OvXDM system, the greater the overlapping multiplicity K, the higher the spectral efficiency, so it is necessary to increase the overlapping multiplicity K as much as possible. For traditional decoding algorithms such as Viterbi decoding, when the overlapping multiplicity increases to a certain value (K>8), the decoding complexity increases sharply, and the existing decoding methods are difficult to meet the needs of real-time decoding

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
  • A decoding method, device and system for ovxdm system
  • A decoding method, device and system for ovxdm system
  • A decoding method, device and system for ovxdm system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0047] Such as figure 2 As shown, the decoding method for the OvXDM system of the present application, an implementation thereof, includes the following steps:

[0048] Step 102: Generate an augmented matrix B related to the received symbol information sequence.

[0049] Augmented matrix B=[H, y], where H is the multiplexing waveform coefficient matrix, y is the received symbol information sequence, the size of matrix B is (N+K-1)×(N+1), and N is the data frame length, K is the number of overlapping multiplexing.

[0050] Step 104: Perform singular decomposition on the augmented matrix B.

[0051] Performing singular decomposition on the augmented matrix B includes decomposing the augmented matrix B into: B=UΣV H, where U is the unitary matrix of (N+K-1)×(N+K-1), Σ is the diagonal matrix of (N+K-1)×(N+1), and V is (N+1) ×(N+1) unitary matrix.

[0052] Step 106: Decoding by total least square method to obtain a decoding output information sequence.

[0053] The solution ...

Embodiment 2

[0076] Such as Figure 4 As shown, the decoding device for the OvXDM system of the present application, where X includes time T domain, space S domain, frequency F domain or hybrid H domain, an implementation of which includes a processing module, a decomposition module and a decoding module . The processing module is used to generate the augmented matrix B related to the received symbol information sequence; the decomposition module is used to perform singular decomposition on the augmented matrix B; the decoding module is used to decode by the total least squares method to obtain the decoded Output information sequence.

[0077] In one embodiment, the augmented matrix B=[H, y], where H is the multiplexing waveform coefficient matrix, y is the received symbol information sequence, and the size of the matrix B is (N+K-1)×(N+ 1), N is the length of the data frame, and K is the number of overlapping multiplexing.

[0078] The decomposition module of the present application is...

Embodiment 3

[0082] The OvXDM system of the present application includes the decoding device for the OvXDM system of Embodiment 2.

[0083] In one embodiment, the OvXDM system may include OvTDM (Overlapped Time Division Multiplexing, overlapping time division multiplexing) system, OvFDM (Overlapped Frequency Division Multiplexing, overlapping frequency division multiplexing) system, OvCDM (Overlapped Code Division Multiplexing, overlapping code division multiplexing) ) system, OvSDM (Overlapped Space Division Multiplexing, overlapping space division multiplexing) system or OvHDM (Overlapped Hybrid Division Multiplexing, overlapping hybrid multiplexing) system.

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 present application discloses a decoding method suitable for OvXDM systems, including: generating an augmented matrix B related to the received symbol information sequence; performing singular decomposition on the augmented matrix B; decoding by total least squares method, Obtain the decoded output information sequence. The application also discloses an OvXDM system. In the specific implementation of the present application, since the total least squares method is used for decoding, it solves the problem that in traditional decoding methods, such as when using Viterbi decoding, a large amount of storage resources (path storage and distance storage) are required, and the following As the number of overlaps increases, the decoding complexity increases sharply. At the same time, the decoding process is symbol-by-symbol decoding, and the real-time performance of the decoding output is low. When the signal is interfered by noise, the present application can obtain decoding results more accurately, simplifies the decoding process, saves system resources, reduces decoding complexity, improves decoding efficiency and ensures system performance.

Description

technical field [0001] The present application relates to the field of communications, and in particular to a decoding method, device and system for an OvXDM system. Background technique [0002] In the OvXDM (Overlapped X Division Multiplexing, X-domain overlapping multiplexing) system (X represents any domain, time T, space S, frequency F or hybrid H, etc.), traditional decoding, such as Viterbi decoding, requires constant access to Trellis The nodes in the graph, and two memories are set for each node, one is used to store the Euclidean distance of the relative best path to the node, and the other is used to store the relative best path to the node. For an M-dimensional modulated system with overlapping multiplicity K, the number of nodes in the Trellis graph is M K , since each node needs to be expanded during the decoding process, the number of nodes determines the decoding complexity, causing the decoding complexity to increase exponentially with the overlapping multi...

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 Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0047H04L1/0052H04L25/03203H04L7/0079H04L1/00H04J99/00
Inventor 不公告发明人
Owner 国网甘肃省电力公司武威供电公司
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