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

Orthogonal Mode and Chip Correlation Transmission Method

An orthogonal mode and transmission method technology, applied in the field of optical communication, can solve the problem of small simulation experiment scale, achieve the effect of suppressing signal crosstalk, suppressing crosstalk between modes, and saving device costs

Active Publication Date: 2021-01-26
NANJING UNIV OF INFORMATION SCI & TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some universities and scientific research institutions in China, including Jilin University, Beijing University of Posts and Telecommunications, Huazhong University of Science and Technology, and Tianjin University, are also beginning to conduct research on the mode multiplexing technology based on few-mode fibers, mainly focusing on the theoretical level, and the simulation experiment scale is small

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
  • Orthogonal Mode and Chip Correlation Transmission Method
  • Orthogonal Mode and Chip Correlation Transmission Method
  • Orthogonal Mode and Chip Correlation Transmission Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] The detailed encoding and decoding process is as follows: image 3 shown. Assuming that the transmission uses 4 orthogonal modes, the bit data to be sent by the user is coded every 2 bits, and the spreading factor is 2. For 4 different modes, 4 different types of codebooks are designed. For example, in codebook 1, each row represents coded chips corresponding to (00), (01), (10), and (11) for every 2 bits, and the color in the code represents “1” in the chip. The first mode transmits (00), selects the first chip (1 0 0 0) in the codebook for transmission, and so on, and then forms information within one chip period, which is transmitted sequentially.

[0047] like image 3 The 4 groups of chips shown are transmitted, then the anti-interference capability of this code is GM= 10 lg(Rc / Rb) =3.01dB. During transmission, mode crosstalk occurs between modes, and the signal will change abruptly. When receiving demodulation at the receiving end, a correlation operation wil...

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 an orthogonal mode and a chip associated transmission method, which belongs to the technical field of optical communication. Spread spectrum processing; 2) Re-encode the original bit stream information, and at the receiving end, perform an integral decision through the corresponding codebook information corresponding to each mode to restore the original bit stream information. The present invention suppresses the crosstalk between modes, and aims at the problem of signal crosstalk caused by the coupling between modes that inevitably occurs in the application of few-mode fibers. From the point of view, the problem of signal crosstalk is suppressed, and the cost of the device is saved. By obtaining certain channel conditions, rationally designing and adjusting the spreading factor and codebook design, the problem of signal crosstalk caused by mode coupling can be effectively suppressed.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to an orthogonal mode and chip correlation transmission method. Background technique [0002] In the field of optical fiber communication, with the emergence of various new technologies and the successful development of various new devices, the traditional single-mode optical fiber is close to the Shannon limit. In order to break through the limitations of the capacity limit of single-mode fiber, new dimensions need to be exploited for transmission. Space Division Multiplexing (SDM) utilizes the dimension of "space" in the optical fiber for multiplexing. Among them, Mode Division Multiplexing (MDM) uses multiple mutually orthogonal modes in a single optical fiber as independent channels at the same time. The transmission of signals is considered to be an effective means to increase the capacity of optical communication, and the transmission capacity can be...

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): H04J14/04H04B10/516H04B1/7097
CPCH04B1/7097H04B10/516H04J14/04
Inventor 刘博忻向军任建新毛雅亚张皓景王瑞春沈磊吴泳锋孙婷婷赵立龙
Owner NANJING UNIV OF INFORMATION SCI & TECH
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